CVE-2026-109374 ZITADEL 3.0.0 before 4.19.2 Privilege Escalation via OIDC Token Exchange Impersonation
Attackers with impersonation roles can bypass checks to impersonate administrators, leading to privilege escalation and account takeover in ZITADEL.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109374?
CVE-2026-109374 is a medium-severity vulnerability in zitadel, published on 12 Oct 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official 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.
Weakness: CWE-863
Which versions are affected by CVE-2026-109374?
How do I fix CVE-2026-109374?
No fix has been published for CVE-2026-109374 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-109374 being exploited?
There is no known exploitation of CVE-2026-109374 in the wild and no public exploit code.
Sources
Also known as GHSA-7j9c-5h49-hq7h, GHSA-w4gv-rcwj-w6r5.