What is GHSA-m6qj-3mpp-57v8?

GHSA-m6qj-3mpp-57v8 is a security advisory published by GitHub Security Advisories with Medium severity. A flaw was found in Keycloak. The cross-session verification proof is keyed only by (local userId...

Which CVE IDs does GHSA-m6qj-3mpp-57v8 cover?

GHSA-m6qj-3mpp-57v8 covers the following CVE IDs: CVE-2026-9087. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-m6qj-3mpp-57v8?

GHSA-m6qj-3mpp-57v8 has a CVSS v3 base score of 6.4, published by GitHub Security Advisories.

GHSA-m6qj-3mpp-57v8MediumCVSS 6.4

A flaw was found in Keycloak. The cross-session verification proof is keyed only by (local userId...

Vendor

GitHub Security Advisories

Published

May 20, 2026

Last Modified

May 20, 2026

🔗 CVE IDs covered (1)

CVE-2026-9087 →

📋 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.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-9087
https://access.redhat.com/security/cve/CVE-2026-9087
https://bugzilla.redhat.com/show_bug.cgi?id=2480172
https://github.com/advisories/GHSA-m6qj-3mpp-57v8