CVE-2026-94612: Auth Bypass (CVSS 7.4)

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.

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CVSS v3.1 Score

7.4

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS — Exploit Prediction

0.0027

Probability of exploitation

0.17%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-287 Improper Authentication

CWE-345 CWE-345

References

Other References

https://docs.goauthentik.io/releases/2026.2#fixed-in-202627 https://docs.goauthentik.io/releases/2026.5#fixed-in-202657 https://docs.goauthentik.io/releases/2026.8#fixed-in-202682 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://github.com/goauthentik/authentik/pull/25957 https://github.com/goauthentik/authentik/pull/25962 https://github.com/goauthentik/authentik/pull/25967

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 7.4 (HIGH).

How severe is CVE-2026-94612? +

CVE-2026-94612 has a CVSS v3.1 score of 7.4 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0027, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-94612? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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