CVE-2026-44255 (GCVE-0-2026-44255)
Vulnerability from cvelistv5
Published
2026-08-19 16:15
Modified
2026-08-25 02:17
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-208 - Observable Timing Discrepancy
Summary
Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.0.0 until 4.14.6 and 5.0.0-beta2, AuthenticationManager.check_user() in framework/wazuh/rbac/orm.py performs check_password_hash() only when the supplied username exists. A nonexistent username returns immediately, while a valid username causes an expensive bcrypt calculation. An unauthenticated remote attacker can compare authentication response times to enumerate valid Wazuh usernames and use that information in subsequent credential attacks. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-44255",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-25T02:16:49.674139Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-25T02:17:14.746Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/wazuh/wazuh/security/advisories/GHSA-3978-44q9-9px9"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "wazuh",
"vendor": "wazuh",
"versions": [
{
"status": "affected",
"version": "\u003e= 4.0.0, \u003c 4.14.6"
},
{
"status": "affected",
"version": "\u003e= 5.0.0-beta1, \u003c 5.0.0-beta2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.0.0 until 4.14.6 and 5.0.0-beta2, AuthenticationManager.check_user() in framework/wazuh/rbac/orm.py performs check_password_hash() only when the supplied username exists. A nonexistent username returns immediately, while a valid username causes an expensive bcrypt calculation. An unauthenticated remote attacker can compare authentication response times to enumerate valid Wazuh usernames and use that information in subsequent credential attacks. This issue is fixed in versions 4.14.6 and 5.0.0-beta2."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-208",
"description": "CWE-208: Observable Timing Discrepancy",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-19T16:15:19.929Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/wazuh/wazuh/security/advisories/GHSA-3978-44q9-9px9",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/wazuh/wazuh/security/advisories/GHSA-3978-44q9-9px9"
},
{
"name": "https://github.com/wazuh/wazuh/pull/35757",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/wazuh/wazuh/pull/35757"
},
{
"name": "https://github.com/wazuh/wazuh/commit/5ecea7b38b998407cb0d205467dd247140a0f981",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/wazuh/wazuh/commit/5ecea7b38b998407cb0d205467dd247140a0f981"
},
{
"name": "https://github.com/wazuh/wazuh/releases/tag/v4.14.6",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/wazuh/wazuh/releases/tag/v4.14.6"
},
{
"name": "https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2"
}
],
"source": {
"advisory": "GHSA-3978-44q9-9px9",
"discovery": "UNKNOWN"
},
"title": "Wazuh: Username Enumeration via Timing Side-Channel"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-44255",
"datePublished": "2026-08-19T16:15:19.929Z",
"dateReserved": "2026-05-05T16:33:55.844Z",
"dateUpdated": "2026-08-25T02:17:14.746Z",
"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-2026-44255\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-25T02:16:49.674139Z\"}}}], \"references\": [{\"url\": \"https://github.com/wazuh/wazuh/security/advisories/GHSA-3978-44q9-9px9\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-25T02:17:10.003Z\"}}], \"cna\": {\"title\": \"Wazuh: Username Enumeration via Timing Side-Channel\", \"source\": {\"advisory\": \"GHSA-3978-44q9-9px9\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"LOW\"}}], \"affected\": [{\"vendor\": \"wazuh\", \"product\": \"wazuh\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 4.0.0, \u003c 4.14.6\"}, {\"status\": \"affected\", \"version\": \"\u003e= 5.0.0-beta1, \u003c 5.0.0-beta2\"}]}], \"references\": [{\"url\": \"https://github.com/wazuh/wazuh/security/advisories/GHSA-3978-44q9-9px9\", \"name\": \"https://github.com/wazuh/wazuh/security/advisories/GHSA-3978-44q9-9px9\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/wazuh/wazuh/pull/35757\", \"name\": \"https://github.com/wazuh/wazuh/pull/35757\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/wazuh/wazuh/commit/5ecea7b38b998407cb0d205467dd247140a0f981\", \"name\": \"https://github.com/wazuh/wazuh/commit/5ecea7b38b998407cb0d205467dd247140a0f981\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/wazuh/wazuh/releases/tag/v4.14.6\", \"name\": \"https://github.com/wazuh/wazuh/releases/tag/v4.14.6\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2\", \"name\": \"https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.0.0 until 4.14.6 and 5.0.0-beta2, AuthenticationManager.check_user() in framework/wazuh/rbac/orm.py performs check_password_hash() only when the supplied username exists. A nonexistent username returns immediately, while a valid username causes an expensive bcrypt calculation. An unauthenticated remote attacker can compare authentication response times to enumerate valid Wazuh usernames and use that information in subsequent credential attacks. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-208\", \"description\": \"CWE-208: Observable Timing Discrepancy\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-08-19T16:15:19.929Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-44255\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-25T02:17:14.746Z\", \"dateReserved\": \"2026-05-05T16:33:55.844Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-08-19T16:15:19.929Z\", \"assignerShortName\": \"GitHub_M\"}",
"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…