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[GHSA-rhgq-f8x5-j2jc] Keycloak's identity-first login flow exposes user information #7679

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[GHSA-rhgq-f8x5-j2jc] Keycloak's identity-first login flow exposes user information #7679

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17 changes: 7 additions & 10 deletions advisories/github-reviewed/2026/03/GHSA-rhgq-f8x5-j2jc/GHSA-rhgq-f8x5-j2jc.json
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Original file line number Diff line number Diff line change
@@ -1,12 +1,12 @@
{
"schema_version": "1.4.0",
"id": "GHSA-rhgq-f8x5-j2jc",
"modified": "2026-04-13T17:55:01Z",
"modified": "2026-04-13T17:55:02Z",
"published": "2026-03-23T12:30:30Z",
"aliases": [
"CVE-2026-4633"
],
"summary": "Keycloak's identity-first login flow exposes user information",
"summary": "Keycloak's identity-first login flow exposes user information",
"details": "A flaw was found in Keycloak. A remote attacker can exploit differential error messages during the identity-first login flow when Organizations are enabled. This vulnerability allows an attacker to determine the existence of users, leading to information disclosure through user enumeration.",
"severity": [
{
Expand All @@ -25,17 +25,14 @@
"type": "ECOSYSTEM",
"events": [
{
"introduced": "26.5.0"
"introduced": "0"
},
{
"fixed": "26.6.0"
"fixed": "26.4.12"
}
]
}
],
"database_specific": {
"last_known_affected_version_range": "<= 26.5.6"
}
]
},
{
"package": {
Expand All @@ -47,10 +44,10 @@
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
"introduced": "26.5.0"
},
{
"last_affected": "26.4.7"
"fixed": "26.6.1"
}
]
}
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