CVE-2026-18963 (GCVE-0-2026-18963)
Vulnerability from cvelistv5
Published
2026-08-18 17:05
Modified
2026-08-20 22:25
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-640 - Weak Password Recovery Mechanism for Forgotten Password
Summary
A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine for identity and access management in Red Hat Build of Keycloak. The issue allows an unauthenticated attacker to force the password reset process for any user without needing to click the required email verification link. This can result in the attacker gaining full control over target user accounts by directly setting new credentials.
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.4 |
Unaffected: 26.4.15-1 < * cpe:/a:redhat:build_keycloak:26.4::el9 |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-18963",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-20T13:53:38.227092Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-20T13:53:45.840Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-operator-bundle",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4.15-1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4-23",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9-operator",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4-23",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4"
],
"defaultStatus": "unaffected",
"packageName": "keycloak-services",
"product": "Red Hat build of Keycloak 26.4.15",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4"
],
"defaultStatus": "unaffected",
"packageName": "rhbk-openshift-rhel9/rhbk-openshift-rhel9",
"product": "Red Hat build of Keycloak 26.4.15",
"vendor": "Red Hat"
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.6::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-operator-bundle",
"product": "Red Hat build of Keycloak 26.6",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.6.6-1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.6::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.6",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.6-12",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.6::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9-operator",
"product": "Red Hat build of Keycloak 26.6",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.6-12",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.6"
],
"defaultStatus": "unaffected",
"packageName": "keycloak-services",
"product": "Red Hat build of Keycloak 26.6.6",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.6"
],
"defaultStatus": "unaffected",
"packageName": "rhbk-keycloak-rhel9/rhbk-keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.6.6",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.6"
],
"defaultStatus": "unaffected",
"packageName": "rhbk-openshift-rhel9/rhbk-openshift-rhel9",
"product": "Red Hat build of Keycloak 26.6.6",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
"cpes": [
"cpe:/a:redhat:jbosseapxp"
],
"defaultStatus": "unaffected",
"packageName": "keycloak-services",
"product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:red_hat_single_sign_on:7"
],
"defaultStatus": "unaffected",
"packageName": "keycloak-services",
"product": "Red Hat Single Sign-On 7",
"vendor": "Red Hat"
}
],
"credits": [
{
"lang": "en",
"value": "Red Hat would like to thank James Paremain for reporting this issue."
}
],
"datePublic": "2026-08-17T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine for identity and access management in Red Hat Build of Keycloak. The issue allows an unauthenticated attacker to force the password reset process for any user without needing to click the required email verification link. This can result in the attacker gaining full control over target user accounts by directly setting new credentials."
}
],
"metrics": [
{
"other": {
"content": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"value": "Critical"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-640",
"description": "Weak Password Recovery Mechanism for Forgotten Password",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-20T22:25:58.686Z",
"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"shortName": "redhat"
},
"references": [
{
"name": "RHSA-2026:56519",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:56519"
},
{
"name": "RHSA-2026:56520",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:56520"
},
{
"name": "RHSA-2026:56523",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:56523"
},
{
"name": "RHSA-2026:56524",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:56524"
},
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-18963"
},
{
"name": "RHBZ#2511595",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2511595"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-07-31T15:46:15.000Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-08-17T00:00:00.000Z",
"value": "Made public."
}
],
"title": "Keycloak-services: keycloak-services: unauthenticated account takeover via reset-credentials flow bypass",
"workarounds": [
{
"lang": "en",
"value": "If an immediate upgrade is not possible, disabling the \"Forgot password\" functionality across all realms can be used as a temporary mitigation.\n\nIn the RHBK administration console, navigate to:\n\nRealm settings \u2192 Login \u2192 Forgot password \u2192 Off\n\nApply this setting to all realms.\n\nUpgrade to a fixed version as soon as possible."
}
],
"x_generator": {
"engine": "cvelib 1.8.0"
},
"x_redhatCweChain": "CWE-640: Weak Password Recovery Mechanism for Forgotten Password"
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2026-18963",
"datePublished": "2026-08-18T17:05:07.478Z",
"dateReserved": "2026-08-05T15:00:40.360Z",
"dateUpdated": "2026-08-20T22:25:58.686Z",
"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-2026-18963\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-20T13:53:38.227092Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-20T13:53:42.089Z\"}}], \"cna\": {\"title\": \"Keycloak-services: keycloak-services: unauthenticated account takeover via reset-credentials flow bypass\", \"credits\": [{\"lang\": \"en\", \"value\": \"Red Hat would like to thank James Paremain for reporting this issue.\"}], \"metrics\": [{\"other\": {\"type\": \"Red Hat severity rating\", \"content\": {\"value\": \"Critical\", \"namespace\": \"https://access.redhat.com/security/updates/classification/\"}}}, {\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 9.1, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"cpes\": [\"cpe:/a:redhat:build_keycloak:26.4::el9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat build of Keycloak 26.4\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"26.4.15-1\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"rhbk/keycloak-operator-bundle\", \"collectionURL\": \"https://catalog.redhat.com/software/containers/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:build_keycloak:26.4::el9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat build of Keycloak 26.4\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"26.4-23\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"rhbk/keycloak-rhel9\", \"collectionURL\": \"https://catalog.redhat.com/software/containers/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:build_keycloak:26.4::el9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat build of Keycloak 26.4\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"26.4-23\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"rhbk/keycloak-rhel9-operator\", \"collectionURL\": \"https://catalog.redhat.com/software/containers/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:build_keycloak:26.4\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat build of Keycloak 26.4.15\", \"packageName\": \"keycloak-services\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"unaffected\"}, {\"cpes\": [\"cpe:/a:redhat:build_keycloak:26.4\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat build of Keycloak 26.4.15\", \"packageName\": \"rhbk-openshift-rhel9/rhbk-openshift-rhel9\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"unaffected\"}, {\"cpes\": [\"cpe:/a:redhat:build_keycloak:26.6::el9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat build of Keycloak 26.6\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"26.6.6-1\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"rhbk/keycloak-operator-bundle\", \"collectionURL\": \"https://catalog.redhat.com/software/containers/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:build_keycloak:26.6::el9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat build of Keycloak 26.6\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"26.6-12\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"rhbk/keycloak-rhel9\", \"collectionURL\": \"https://catalog.redhat.com/software/containers/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:build_keycloak:26.6::el9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat build of Keycloak 26.6\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"26.6-12\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"rhbk/keycloak-rhel9-operator\", \"collectionURL\": \"https://catalog.redhat.com/software/containers/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:build_keycloak:26.6\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat build of Keycloak 26.6.6\", \"packageName\": \"keycloak-services\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"unaffected\"}, {\"cpes\": [\"cpe:/a:redhat:build_keycloak:26.6\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat build of Keycloak 26.6.6\", \"packageName\": \"rhbk-keycloak-rhel9/rhbk-keycloak-rhel9\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"unaffected\"}, {\"cpes\": [\"cpe:/a:redhat:build_keycloak:26.6\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat build of Keycloak 26.6.6\", \"packageName\": \"rhbk-openshift-rhel9/rhbk-openshift-rhel9\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"unaffected\"}, {\"cpes\": [\"cpe:/a:redhat:jbosseapxp\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat JBoss Enterprise Application Platform Expansion Pack\", \"packageName\": \"keycloak-services\", \"collectionURL\": \"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html\", \"defaultStatus\": \"unaffected\"}, {\"cpes\": [\"cpe:/a:redhat:red_hat_single_sign_on:7\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Single Sign-On 7\", \"packageName\": \"keycloak-services\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"unaffected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-07-31T15:46:15.000Z\", \"value\": \"Reported to Red Hat.\"}, {\"lang\": \"en\", \"time\": \"2026-08-17T00:00:00.000Z\", \"value\": \"Made public.\"}], \"datePublic\": \"2026-08-17T00:00:00.000Z\", \"references\": [{\"url\": \"https://access.redhat.com/errata/RHSA-2026:56519\", \"name\": \"RHSA-2026:56519\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:56520\", \"name\": \"RHSA-2026:56520\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:56523\", \"name\": \"RHSA-2026:56523\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:56524\", \"name\": \"RHSA-2026:56524\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/security/cve/CVE-2026-18963\", \"tags\": [\"vdb-entry\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2511595\", \"name\": \"RHBZ#2511595\", \"tags\": [\"issue-tracking\", \"x_refsource_REDHAT\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"If an immediate upgrade is not possible, disabling the \\\"Forgot password\\\" functionality across all realms can be used as a temporary mitigation.\\n\\nIn the RHBK administration console, navigate to:\\n\\nRealm settings \\u2192 Login \\u2192 Forgot password \\u2192 Off\\n\\nApply this setting to all realms.\\n\\nUpgrade to a fixed version as soon as possible.\"}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine for identity and access management in Red Hat Build of Keycloak. The issue allows an unauthenticated attacker to force the password reset process for any user without needing to click the required email verification link. This can result in the attacker gaining full control over target user accounts by directly setting new credentials.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-640\", \"description\": \"Weak Password Recovery Mechanism for Forgotten Password\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2026-08-20T22:25:58.686Z\"}, \"x_redhatCweChain\": \"CWE-640: Weak Password Recovery Mechanism for Forgotten Password\"}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-18963\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-20T22:25:58.686Z\", \"dateReserved\": \"2026-08-05T15:00:40.360Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2026-08-18T17:05:07.478Z\", \"assignerShortName\": \"redhat\"}",
"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…