CVE-2026-85500 (GCVE-0-2026-85500)
Vulnerability from cvelistv5
Published
2026-09-17 13:09
Modified
2026-09-17 18:12
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-305 - Authentication Bypass by Primary Weakness
Summary
Authentication Bypass by Primary Weakness vulnerability in team-alembic AshAuthentication allows an unconfirmed user to obtain a session, defeating a mandatory email confirmation requirement.
AshAuthentication.Strategy.Password.Actions.check_user/2 decides whether the attribute named by require_confirmed_with is set using a bare is_nil(Map.get(user, value)). When that attribute is not selected on the loaded record Map.get/2 returns %Ash.NotLoaded{}, and when a field policy denies it for the current actor it returns %Ash.ForbiddenField{}. Neither is nil, so the rejection branch is skipped and sign-i
require_confirmed_with is enforced in two places, and neither holds in every configuration. sign_in_with_token and register are checked only inside AshAuthentication.Strategy.Password.Actions, not on the action itself, so any caller that invokes the action directly skips the check. An API layer such as AshGraphql or AshJsonApi invokes the action directly, so this applies to the default configuration. Where a check does run it compares the confirmation attribute against nil. That attribute holds %Ash.NotLoaded{} or %Ash.ForbiddenField{} when it sets select_by_default?: false, when an API layer narrows the read's select, or when a field policy hides it from the sign-in actor. Neither struct is nil, so those configurations read every user as confirmed.
This issue affects ash_authentication: from 4.3.8 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| team-alembic | ash_authentication |
Version: 4.3.8 ≤ Version: 5.0.0-rc.0 ≤ cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:* |
|||||||
|
|||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-85500",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-17T18:12:03.493938Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-17T18:12:54.127Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo.hex.pm",
"cpes": [
"cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027"
],
"packageName": "ash_authentication",
"packageURL": "pkg:hex/ash_authentication",
"product": "ash_authentication",
"programFiles": [
"lib/ash_authentication/strategies/password/actions.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027:check_user/2"
},
{
"name": "\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027:sign_in_with_token/3"
},
{
"name": "\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027:register/3"
}
],
"repo": "https://github.com/team-alembic/ash_authentication",
"vendor": "team-alembic",
"versions": [
{
"lessThan": "4.15.0",
"status": "affected",
"version": "4.3.8",
"versionType": "semver"
},
{
"lessThan": "5.0.0-rc.14",
"status": "affected",
"version": "5.0.0-rc.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027"
],
"packageName": "team-alembic/ash_authentication",
"packageURL": "pkg:github/team-alembic/ash_authentication",
"product": "ash_authentication",
"programFiles": [
"lib/ash_authentication/strategies/password/actions.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027:check_user/2"
},
{
"name": "\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027:sign_in_with_token/3"
},
{
"name": "\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027:register/3"
}
],
"repo": "https://github.com/team-alembic/ash_authentication",
"vendor": "team-alembic",
"versions": [
{
"changes": [
{
"at": "17f4c25a372d1778c9cc457759e6357570d83711",
"status": "unaffected"
},
{
"at": "1076639a9d40213088d110c79ba6735b8cc85b16",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "7d37bc6e4df6697b5813d2f373f0fdb08f813f98",
"versionType": "git"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.15.0",
"versionStartIncluding": "4.3.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.0.0-rc.14",
"versionStartIncluding": "5.0.0-rc.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "analyst",
"value": "Jonatan M\u00e4nnchen / EEF"
},
{
"lang": "en",
"type": "remediation developer",
"value": "James Harton"
}
],
"dateAssigned": "2026-09-11T18:24:17.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eAuthentication Bypass by Primary Weakness vulnerability in team-alembic AshAuthentication allows an unconfirmed user to obtain a session, defeating a mandatory email confirmation requirement.\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eAshAuthentication.Strategy.Password.Actions.check_user/2\u003c/code\u003e decides whether the attribute named by \u003ccode\u003erequire_confirmed_with\u003c/code\u003e is set using a bare \u003ccode\u003eis_nil(Map.get(user, value))\u003c/code\u003e. When that attribute is not selected on the loaded record \u003ccode\u003eMap.get/2\u003c/code\u003e returns \u003ccode\u003e%Ash.NotLoaded{}\u003c/code\u003e, and when a field policy denies it for the current actor it returns \u003ccode\u003e%Ash.ForbiddenField{}\u003c/code\u003e. Neither is \u003ccode\u003enil\u003c/code\u003e, so the rejection branch is skipped and sign-i\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003erequire_confirmed_with\u003c/code\u003e is enforced in two places, and neither holds in every\nconfiguration. \u003ccode\u003esign_in_with_token\u003c/code\u003e and \u003ccode\u003eregister\u003c/code\u003e are checked only inside\n\u003ccode\u003eAshAuthentication.Strategy.Password.Actions\u003c/code\u003e, not on the action itself, so any caller\nthat invokes the action directly skips the check. An API layer such as \u003ccode\u003eAshGraphql\u003c/code\u003e or\n\u003ccode\u003eAshJsonApi\u003c/code\u003e invokes the action directly, so this applies to the default configuration.\nWhere a check does run it compares the confirmation attribute against \u003ccode\u003enil\u003c/code\u003e. That\nattribute holds \u003ccode\u003e%Ash.NotLoaded{}\u003c/code\u003e or \u003ccode\u003e%Ash.ForbiddenField{}\u003c/code\u003e when it sets\n\u003ccode\u003eselect_by_default?: false\u003c/code\u003e, when an API layer narrows the read\u0027s \u003ccode\u003eselect\u003c/code\u003e, or when a\nfield policy hides it from the sign-in actor. Neither struct is \u003ccode\u003enil\u003c/code\u003e, so those\nconfigurations read every user as confirmed.\u003c/p\u003e\n\u003cp\u003eThis issue affects ash_authentication: from 4.3.8 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "Authentication Bypass by Primary Weakness vulnerability in team-alembic AshAuthentication allows an unconfirmed user to obtain a session, defeating a mandatory email confirmation requirement.\n\n`AshAuthentication.Strategy.Password.Actions.check_user/2` decides whether the attribute named by `require_confirmed_with` is set using a bare `is_nil(Map.get(user, value))`. When that attribute is not selected on the loaded record `Map.get/2` returns `%Ash.NotLoaded{}`, and when a field policy denies it for the current actor it returns `%Ash.ForbiddenField{}`. Neither is `nil`, so the rejection branch is skipped and sign-i\n\n`require_confirmed_with` is enforced in two places, and neither holds in every\nconfiguration. `sign_in_with_token` and `register` are checked only inside\n`AshAuthentication.Strategy.Password.Actions`, not on the action itself, so any caller\nthat invokes the action directly skips the check. An API layer such as `AshGraphql` or\n`AshJsonApi` invokes the action directly, so this applies to the default configuration.\nWhere a check does run it compares the confirmation attribute against `nil`. That\nattribute holds `%Ash.NotLoaded{}` or `%Ash.ForbiddenField{}` when it sets\n`select_by_default?: false`, when an API layer narrows the read\u0027s `select`, or when a\nfield policy hides it from the sign-in actor. Neither struct is `nil`, so those\nconfigurations read every user as confirmed.\n\nThis issue affects ash_authentication: from 4.3.8 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14."
}
],
"value": "Authentication Bypass by Primary Weakness vulnerability in team-alembic AshAuthentication allows an unconfirmed user to obtain a session, defeating a mandatory email confirmation requirement.\n\nAshAuthentication.Strategy.Password.Actions.check_user/2 decides whether the attribute named by require_confirmed_with is set using a bare is_nil(Map.get(user, value)). When that attribute is not selected on the loaded record Map.get/2 returns %Ash.NotLoaded{}, and when a field policy denies it for the current actor it returns %Ash.ForbiddenField{}. Neither is nil, so the rejection branch is skipped and sign-i\n\nrequire_confirmed_with is enforced in two places, and neither holds in every configuration. sign_in_with_token and register are checked only inside AshAuthentication.Strategy.Password.Actions, not on the action itself, so any caller that invokes the action directly skips the check. An API layer such as AshGraphql or AshJsonApi invokes the action directly, so this applies to the default configuration. Where a check does run it compares the confirmation attribute against nil. That attribute holds %Ash.NotLoaded{} or %Ash.ForbiddenField{} when it sets select_by_default?: false, when an API layer narrows the read\u0027s select, or when a field policy hides it from the sign-in actor. Neither struct is nil, so those configurations read every user as confirmed.\n\nThis issue affects ash_authentication: from 4.3.8 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14."
}
],
"impacts": [
{
"capecId": "CAPEC-115",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-115 Authentication Bypass"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-305",
"description": "CWE-305 Authentication Bypass by Primary Weakness",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-17T13:09:43.000Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-fc47-6pgw-wh22"
},
{
"name": "EEF CNA record for CVE-2026-85500",
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-85500.html"
},
{
"name": "OSV record EEF-CVE-2026-85500",
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-85500"
},
{
"name": "Introducing commit 7d37bc6 in team-alembic/ash_authentication",
"tags": [
"related"
],
"url": "https://github.com/team-alembic/ash_authentication/commit/7d37bc6e4df6697b5813d2f373f0fdb08f813f98"
},
{
"name": "Fix commit 17f4c25 in team-alembic/ash_authentication",
"tags": [
"patch"
],
"url": "https://github.com/team-alembic/ash_authentication/commit/17f4c25a372d1778c9cc457759e6357570d83711"
},
{
"name": "Fix commit 1076639 in team-alembic/ash_authentication",
"tags": [
"patch"
],
"url": "https://github.com/team-alembic/ash_authentication/commit/1076639a9d40213088d110c79ba6735b8cc85b16"
}
],
"source": {
"discovery": "INTERNAL"
},
"title": "`require_confirmed_with` is not enforced on the action and fails open on an unreadable attribute in AshAuthentication"
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-85500",
"datePublished": "2026-09-17T13:09:43.000Z",
"dateReserved": "2026-09-07T23:45:01.895Z",
"dateUpdated": "2026-09-17T18:12:54.127Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-85500\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-09-17T18:12:03.493938Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-09-17T18:12:11.379Z\"}}], \"cna\": {\"title\": \"`require_confirmed_with` is not enforced on the action and fails open on an unreadable attribute in AshAuthentication\", \"source\": {\"discovery\": \"INTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"Peter Ullrich\"}, {\"lang\": \"en\", \"type\": \"analyst\", \"value\": \"Jonatan M\\u00e4nnchen / EEF\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"James Harton\"}], \"impacts\": [{\"capecId\": \"CAPEC-115\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-115 Authentication Bypass\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 9.1, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"PRESENT\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"HIGH\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/team-alembic/ash_authentication\", \"vendor\": \"team-alembic\", \"modules\": [\"\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027\"], \"product\": \"ash_authentication\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.3.8\", \"lessThan\": \"4.15.0\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.0.0-rc.0\", \"lessThan\": \"5.0.0-rc.14\", \"versionType\": \"semver\"}], \"packageURL\": \"pkg:hex/ash_authentication\", \"packageName\": \"ash_authentication\", \"programFiles\": [\"lib/ash_authentication/strategies/password/actions.ex\"], \"collectionURL\": \"https://repo.hex.pm\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027:check_user/2\"}, {\"name\": \"\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027:sign_in_with_token/3\"}, {\"name\": \"\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027:register/3\"}]}, {\"cpes\": [\"cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/team-alembic/ash_authentication\", \"vendor\": \"team-alembic\", \"modules\": [\"\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027\"], \"product\": \"ash_authentication\", \"versions\": [{\"status\": \"affected\", \"changes\": [{\"at\": \"17f4c25a372d1778c9cc457759e6357570d83711\", \"status\": \"unaffected\"}, {\"at\": \"1076639a9d40213088d110c79ba6735b8cc85b16\", \"status\": \"unaffected\"}], \"version\": \"7d37bc6e4df6697b5813d2f373f0fdb08f813f98\", \"lessThan\": \"*\", \"versionType\": \"git\"}], \"packageURL\": \"pkg:github/team-alembic/ash_authentication\", \"packageName\": \"team-alembic/ash_authentication\", \"programFiles\": [\"lib/ash_authentication/strategies/password/actions.ex\"], \"collectionURL\": \"https://github.com\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027:check_user/2\"}, {\"name\": \"\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027:sign_in_with_token/3\"}, {\"name\": \"\u0027Elixir.AshAuthentication.Strategy.Password.Actions\u0027:register/3\"}]}], \"references\": [{\"url\": \"https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-fc47-6pgw-wh22\", \"tags\": [\"vendor-advisory\", \"related\"]}, {\"url\": \"https://cna.erlef.org/cves/CVE-2026-85500.html\", \"name\": \"EEF CNA record for CVE-2026-85500\", \"tags\": [\"related\"]}, {\"url\": \"https://osv.dev/vulnerability/EEF-CVE-2026-85500\", \"name\": \"OSV record EEF-CVE-2026-85500\", \"tags\": [\"related\"]}, {\"url\": \"https://github.com/team-alembic/ash_authentication/commit/7d37bc6e4df6697b5813d2f373f0fdb08f813f98\", \"name\": \"Introducing commit 7d37bc6 in team-alembic/ash_authentication\", \"tags\": [\"related\"]}, {\"url\": \"https://github.com/team-alembic/ash_authentication/commit/17f4c25a372d1778c9cc457759e6357570d83711\", \"name\": \"Fix commit 17f4c25 in team-alembic/ash_authentication\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/team-alembic/ash_authentication/commit/1076639a9d40213088d110c79ba6735b8cc85b16\", \"name\": \"Fix commit 1076639 in team-alembic/ash_authentication\", \"tags\": [\"patch\"]}], \"dateAssigned\": \"2026-09-11T18:24:17.000Z\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"Authentication Bypass by Primary Weakness vulnerability in team-alembic AshAuthentication allows an unconfirmed user to obtain a session, defeating a mandatory email confirmation requirement.\\n\\nAshAuthentication.Strategy.Password.Actions.check_user/2 decides whether the attribute named by require_confirmed_with is set using a bare is_nil(Map.get(user, value)). When that attribute is not selected on the loaded record Map.get/2 returns %Ash.NotLoaded{}, and when a field policy denies it for the current actor it returns %Ash.ForbiddenField{}. Neither is nil, so the rejection branch is skipped and sign-i\\n\\nrequire_confirmed_with is enforced in two places, and neither holds in every configuration. sign_in_with_token and register are checked only inside AshAuthentication.Strategy.Password.Actions, not on the action itself, so any caller that invokes the action directly skips the check. An API layer such as AshGraphql or AshJsonApi invokes the action directly, so this applies to the default configuration. Where a check does run it compares the confirmation attribute against nil. That attribute holds %Ash.NotLoaded{} or %Ash.ForbiddenField{} when it sets select_by_default?: false, when an API layer narrows the read\u0027s select, or when a field policy hides it from the sign-in actor. Neither struct is nil, so those configurations read every user as confirmed.\\n\\nThis issue affects ash_authentication: from 4.3.8 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eAuthentication Bypass by Primary Weakness vulnerability in team-alembic AshAuthentication allows an unconfirmed user to obtain a session, defeating a mandatory email confirmation requirement.\u003c/p\u003e\\n\u003cp\u003e\u003ccode\u003eAshAuthentication.Strategy.Password.Actions.check_user/2\u003c/code\u003e decides whether the attribute named by \u003ccode\u003erequire_confirmed_with\u003c/code\u003e is set using a bare \u003ccode\u003eis_nil(Map.get(user, value))\u003c/code\u003e. When that attribute is not selected on the loaded record \u003ccode\u003eMap.get/2\u003c/code\u003e returns \u003ccode\u003e%Ash.NotLoaded{}\u003c/code\u003e, and when a field policy denies it for the current actor it returns \u003ccode\u003e%Ash.ForbiddenField{}\u003c/code\u003e. Neither is \u003ccode\u003enil\u003c/code\u003e, so the rejection branch is skipped and sign-i\u003c/p\u003e\\n\u003cp\u003e\u003ccode\u003erequire_confirmed_with\u003c/code\u003e is enforced in two places, and neither holds in every\\nconfiguration. \u003ccode\u003esign_in_with_token\u003c/code\u003e and \u003ccode\u003eregister\u003c/code\u003e are checked only inside\\n\u003ccode\u003eAshAuthentication.Strategy.Password.Actions\u003c/code\u003e, not on the action itself, so any caller\\nthat invokes the action directly skips the check. An API layer such as \u003ccode\u003eAshGraphql\u003c/code\u003e or\\n\u003ccode\u003eAshJsonApi\u003c/code\u003e invokes the action directly, so this applies to the default configuration.\\nWhere a check does run it compares the confirmation attribute against \u003ccode\u003enil\u003c/code\u003e. That\\nattribute holds \u003ccode\u003e%Ash.NotLoaded{}\u003c/code\u003e or \u003ccode\u003e%Ash.ForbiddenField{}\u003c/code\u003e when it sets\\n\u003ccode\u003eselect_by_default?: false\u003c/code\u003e, when an API layer narrows the read\u0027s \u003ccode\u003eselect\u003c/code\u003e, or when a\\nfield policy hides it from the sign-in actor. Neither struct is \u003ccode\u003enil\u003c/code\u003e, so those\\nconfigurations read every user as confirmed.\u003c/p\u003e\\n\u003cp\u003eThis issue affects ash_authentication: from 4.3.8 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.\u003c/p\u003e\", \"base64\": false}, {\"type\": \"text/markdown\", \"value\": \"Authentication Bypass by Primary Weakness vulnerability in team-alembic AshAuthentication allows an unconfirmed user to obtain a session, defeating a mandatory email confirmation requirement.\\n\\n`AshAuthentication.Strategy.Password.Actions.check_user/2` decides whether the attribute named by `require_confirmed_with` is set using a bare `is_nil(Map.get(user, value))`. When that attribute is not selected on the loaded record `Map.get/2` returns `%Ash.NotLoaded{}`, and when a field policy denies it for the current actor it returns `%Ash.ForbiddenField{}`. Neither is `nil`, so the rejection branch is skipped and sign-i\\n\\n`require_confirmed_with` is enforced in two places, and neither holds in every\\nconfiguration. `sign_in_with_token` and `register` are checked only inside\\n`AshAuthentication.Strategy.Password.Actions`, not on the action itself, so any caller\\nthat invokes the action directly skips the check. An API layer such as `AshGraphql` or\\n`AshJsonApi` invokes the action directly, so this applies to the default configuration.\\nWhere a check does run it compares the confirmation attribute against `nil`. That\\nattribute holds `%Ash.NotLoaded{}` or `%Ash.ForbiddenField{}` when it sets\\n`select_by_default?: false`, when an API layer narrows the read\u0027s `select`, or when a\\nfield policy hides it from the sign-in actor. Neither struct is `nil`, so those\\nconfigurations read every user as confirmed.\\n\\nThis issue affects ash_authentication: from 4.3.8 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-305\", \"description\": \"CWE-305 Authentication Bypass by Primary Weakness\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.15.0\", \"versionStartIncluding\": \"4.3.8\"}, {\"criteria\": \"cpe:2.3:a:team-alembic:ash_authentication:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.0.0-rc.14\", \"versionStartIncluding\": \"5.0.0-rc.0\"}], \"operator\": \"OR\"}], \"operator\": \"AND\"}], \"providerMetadata\": {\"orgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"shortName\": \"EEF\", \"dateUpdated\": \"2026-09-17T13:09:43.000Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-85500\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-17T18:12:54.127Z\", \"dateReserved\": \"2026-09-07T23:45:01.895Z\", \"assignerOrgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"datePublished\": \"2026-09-17T13:09:43.000Z\", \"assignerShortName\": \"EEF\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…