CVE-2026-25748authentik is an open-source identity provider.
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 2025.10.4 and 2025.12.4, with a malformed cookie it was possible to bypass authentication when using forward authentication in the authentik Proxy Provider when used in conjunction with Traefik or Caddy as reverse proxy. When a malicious cookie was used, none of the authentik-specific X-Authentik-* headers were set which depending on application can grant access to an attacker. authentik 2025.10.4 and 2025.12.4 fix this issue.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-287
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
goauthentik authentik goauthentik:authentik | before 2025.10.4; from 2025.12.0 before 2025.12.4 | NVD |
References
- https://github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4product, release-notes
- https://github.com/goauthentik/authentik/releases/tag/version%2F2025.12.4product, release-notes
- https://github.com/goauthentik/authentik/security/advisories/GHSA-fj56-5763-j8ppvendor-advisory
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.