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Details of issue NIXPKGS-2026-1859

NIXPKGS-2026-1859
published on
Permalink CVE-2026-47201
8.5 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): High (H)
  • Privileges Required (PR): Low (L)
  • User Interaction (UI): None (N)
  • Scope (S): Changed (C)
  • Confidentiality (C): High (H)
  • Integrity (I): High (H)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): High (H)
  • Modified Privileges Required (MPR): Low (L)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): High (H)
  • Modified Scope (MS): Changed (C)
  • Modified Integrity (MI): High (H)
  • Modified Availability (MA): High (H)
updated 8 hours ago by @LeSuisse Activity log
  • Created suggestion 12 hours ago
  • @LeSuisse ignored
    3 packages
    • authentik-outposts.ldap
    • authentik-outposts.proxy
    • authentik-outposts.radius
    8 hours ago
  • @LeSuisse accepted 8 hours ago
  • @LeSuisse published on GitHub 8 hours ago
authentik: XML Signature Wrapping in SAML Source ACS allows authentication as arbitrary federated user

authentik is an open-source identity provider. Prior to versions 2025.12.5, 2026.2.3, and 2026.5.1, authentik's SAML Source ACS endpoint is vulnerable to XML Signature Wrapping when validating upstream SAML responses. An attacker with any account at the upstream IdP can reuse a valid signed assertion to authenticate as another federated user. This issue has been patched in versions 2025.12.5, 2026.2.3, and 2026.5.1.

Affected products

authentik
  • ==< 2026.2.3
  • ==< 2026.5.1
  • ==< 2025.12.5

Matching in nixpkgs

Ignored packages (3)