CVE-2026-9087
MEDIUM6.4CVSS v3
—CVSS v2
0.03%
EPSS (exploit probability)
CWE-639CWE
Description
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.
CVSS v3 vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
Affected routers (0)
No routers currently mapped to this CVE in our database.