What is GHSA-7j9c-5h49-hq7h?

GHSA-7j9c-5h49-hq7h is a security advisory published by GitHub Security Advisories with Medium severity. ZITADEL 3.0.0 before 4.19.2 contains a privilege escalation vulnerability in OIDC token exchange...

Which CVE IDs does GHSA-7j9c-5h49-hq7h cover?

GHSA-7j9c-5h49-hq7h covers the following CVE IDs: CVE-2026-109374. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-7j9c-5h49-hq7h?

GHSA-7j9c-5h49-hq7h has a CVSS v3 base score of 5.5, published by GitHub Security Advisories.

GHSA-7j9c-5h49-hq7hMediumCVSS 5.5

ZITADEL 3.0.0 before 4.19.2 contains a privilege escalation vulnerability in OIDC token exchange...

Vendor

GitHub Security Advisories

Published

October 12, 2026

Last Modified

October 12, 2026

🔗 CVE IDs covered (1)

CVE-2026-109374 →

📋 Description

ZITADEL 3.0.0 before 4.19.2 contains a privilege escalation vulnerability in OIDC token exchange that allows end-user impersonators to impersonate administrators including IAM_OWNER by bypassing the admin.impersonation check. Attackers holding IAM_END_USER_IMPERSONATOR or ORG_END_USER_IMPERSONATOR roles can sign in to relying applications as administrators with their roles and claims.

🔗 References (4)

https://github.com/zitadel/zitadel/security/advisories/GHSA-w4gv-rcwj-w6r5
https://nvd.nist.gov/vuln/detail/CVE-2026-109374
https://www.vulncheck.com/advisories/zitadel-3.0.0-before-4.19.2-privilege-escalation-via-oidc-token-exchange-impersonation
https://github.com/advisories/GHSA-7j9c-5h49-hq7h