PT-2026-7893 · Traefik+2 · Traefik+2

Imlonghao · Published 2026-02-12 · Updated 2026-04-16 · CVE-2026-25748

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions authentik versions prior to 2025.10.4 authentik versions prior to 2025.12.4

Description authentik is an open-source identity provider. A malformed cookie could bypass authentication when using forward authentication with the authentik Proxy Provider in conjunction with Traefik or Caddy as a reverse proxy. The absence of authentik-specific X-Authentik-* headers with a malicious cookie could grant access to an attacker, depending on the application.

Recommendations Update to authentik version 2025.10.4 or later. Update to authentik version 2025.12.4 or later.

Exploit

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

BIT-AUTHENTIK-2026-25748

CVE-2026-25748

GHSA-FJ56-5763-J8PP

Affected Products

Caddy

Traefik

Authentik

References · 12

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25748.json · Exploit
• https://github.com/goauthentik/authentik/security/advisories/GHSA-fj56-5763-j8pp · Vendor Advisory
• https://osv.dev/vulnerability/BIT-authentik-2026-25748 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-25748 · Security Note
• https://osv.dev/vulnerability/CVE-2026-25748 · Vendor Advisory
• https://github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4 · Note
• https://github.com/goauthentik/authentik/releases/tag/version%2F2025.12.4 · Note
• https://twitter.com/CveFindCom/status/2022071067452260718 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2022117928968036749 · Twitter Post
• https://twitter.com/pulsepatchio/status/2022683330249212008 · Twitter Post
• https://reddit.com/r/selfhosted/comments/1r3o9od/authentik_current_release_patches_cves · Reddit Post
• https://twitter.com/CVEnew/status/2022037594192720131 · Twitter Post