CVE-2026-42300 PUBLISHED

DevGuard: Unauthenticated identity assertion via `X-Admin-Token` header

Assigner: GitHub_M
Reserved: 26.04.2026 Published: 12.05.2026 Updated: 12.05.2026

DevGuard provides vulnerability management for the full software supply chain. Prior to 1.2.2, the SessionMiddleware accepts a client-supplied X-Admin-Token HTTP request header and uses its raw string value as the authenticated userID when no Kratos session cookie is present. An unauthenticated attacker who knows or can guess a target user's Kratos identity UUID can issue requests as that user. Where the target user is an organisation admin or owner, this gives the attacker full control over that organisation's DevGuard resources. This vulnerability is fixed in 1.2.2.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 9.3

Product Status

Vendor l3montree-dev
Product devguard
Versions
  • Version < 1.2.2 is affected

References

Problem Types

  • CWE-288: Authentication Bypass Using an Alternate Path or Channel CWE