Auth bypass in Goauthentik Authentik
CVE-2026-94612
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (19.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Goauthentik Authentik — versions < 2026.2.7, >= 2026.5.0, < 2026.5.7, >= 2026.8.0, < 2026.8.2
Weakness classification (CWE)
References
- https://github.com/goauthentik/authentik/security/advisories/GHSA-cqj8-fxxf-9pg7
- https://github.com/goauthentik/authentik/pull/25957
- https://github.com/goauthentik/authentik/pull/25962
- https://github.com/goauthentik/authentik/pull/25967
- https://github.com/goauthentik/authentik/pull/25972
- https://github.com/goauthentik/authentik/commit/287ea13cdc23c378abc20a7b71c9c7919a19a89a
- https://github.com/goauthentik/authentik/commit/355d8cc3d755fbba05fc5fa90ffbcbe6469acddd
- https://github.com/goauthentik/authentik/commit/54fac864a0b3bc00551af1908f662b3bf5cc6135
- https://github.com/goauthentik/authentik/commit/984b0162711f0d1988ed33544d0a671c93e4ec76
- https://docs.goauthentik.io/releases/2026.2#fixed-in-202627
Frequently asked questions
- What is CVE-2026-94612?
- CVE-2026-94612 is a high-severity vulnerability in Goauthentik Authentik, classified under Improper Authentication. CVSS score: 7.4/10. Published 2026-09-24.
- How severe is CVE-2026-94612?
- High severity. CVSS v3 base score is 7.4 out of 10.