CVE-2026-94612 authentik: Authentication bypass via assertion confusion in SAML sources
An unauthenticated attacker can bypass authentication in authentik SAML sources by reusing or misdirecting valid assertions, leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-94612?
CVE-2026-94612 is a high-severity authentication bypass vulnerability in goauthentik authentik, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
authentik is an open-source identity provider. Prior to 2026.2.7, 2026.5.7, and 2026.8.2, an authentik SAML Source verifies an assertion's signature and validity period but does not ensure that the identity provider issued the assertion for that Source or in response to a login request from that Source. The SAML Source also does not record already accepted assertions, allowing replay. An unauthenticated actor who possesses such a valid assertion can use an assertion intended for another service provider or reuse an earlier assertion to authenticate as the user named by the assertion. Only SAML Sources are affected; SAML Providers and other Source types are not affected. This issue is fixed in versions 2026.2.7, 2026.5.7, and 2026.8.2.
Which versions are affected by CVE-2026-94612?
1 open source package ship an affected version, including authentik.
| Package | Affected | Fixed in |
|---|---|---|
authentik Bitnami | All versions | 2026.2.7, 2026.5.7, 2026.8.2 |
How do I fix CVE-2026-94612?
Upgrade authentik to a fixed version for your release line: 2026.2.7, 2026.5.7 or 2026.8.2.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-94612 being exploited?
There is no known exploitation of CVE-2026-94612 in the wild and no public exploit code.
Sources
Also known as BIT-authentik-2026-94612, GHSA-cqj8-fxxf-9pg7.