CVE record
CVE-2026-9087
A flaw was found in Keycloak. The cross-session verification proof is keyed only by (local userId, idpAlias) and is not bound to the upstream identity that was actually verified, so a second upstream account on the same IdP can consume it and get linked to the victim's local account.
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Vulnerability metadata
- Published
- 2026-05-20T11:46:32.207Z
- Modified
- 2026-05-20T12:02:35.827Z
- EPSS
- Not available
- Vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
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