CVE-2026-25922authentik has a Signature Verification Bypass via SAML Assertion Wrapping
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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authentik is an open-source identity provider. Prior to 2025.8.6, 2025.10.4, and 2025.12.4, when using a SAML Source that has the option Verify Assertion Signature under Verification Certificate enabled and not Verify Response Signature, or does not have the Encryption Certificate setting under Advanced Protocol settings configured, it was possible for an attacker to inject a malicious assertion before the signed assertion that authentik would use instead. authentik 2025.8.6, 2025.10.4, and 2025.12.4 fix this issue.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-287, CWE-347
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Feb 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
goauthentik authentik goauthentik:authentik (from the name) | before 2025.8.6; from 2025.10.0-rc1, < 2025.10.4; from 2025.10.0-rc1, < 2025.12.4 | CNA record |
goauthentik authentik goauthentik:authentik | before 2025.8.6; from 2025.10.0 before 2025.10.4; from 2025.12.0 before 2025.12.4 | NVD |
References
- https://github.com/goauthentik/authentik/security/advisories/GHSA-jh35-c4cc-wjm4x-refsource-confirm, mitigation, vendor-advisory
- https://github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4x-refsource-misc, product, release-notes
- https://github.com/goauthentik/authentik/releases/tag/version%2F2025.12.4x-refsource-misc, product, release-notes
- https://github.com/goauthentik/authentik/releases/tag/version%2F2025.8.6x-refsource-misc, product, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.