CVE-2026-9087EPSS p17.5%

CVE-2026-9087CVE-2026-9087

redhat / build_of_keycloak

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.

Scoring

CVSS 6.4 ()
VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
EPSS0.26% probability of exploitation · percentile 17.5% · 2026-06-19T12:03:05Z
Last modified2026-06-10

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.