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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-94613

authentik: Denial of Service via Document Type Declarations in SAML Messages

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Status
Published
Published
Updated
Assigning organization
GitHub_M

Description

authentik is an open-source identity provider. Prior to 2026.2.7, 2026.5.7, and 2026.8.2, an unauthenticated attacker can submit a malformed SAML message to an authentik deployment using SAML in either the identity-provider or SAML source role. The message can stop the worker handling /application/saml/* or /source/saml/*, causing the requests assigned to that worker to fail. Worker process termination and automatic restart do not destroy database-backed sessions, but continued malicious messages can cause a sustained share of legitimate traffic to fail. Other protocol implementations are not affected. This issue is fixed in versions 2026.2.7, 2026.5.7, and 2026.8.2.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

goauthentik authentik

  • < 2026.2.7affected
  • >= 2026.5.0, < 2026.5.7affected
  • >= 2026.8.0, < 2026.8.2affected

References