~ / search / GHSA-2g9v-7mr5-fgjg

GHSA-2g9v-7mr5-fgjg

DevGuard has an unauthenticated identity assertion via `X-Admin-Token` header

Source: GitHub Advisory Database (reviewed) Critical CVE-2026-42300

Packages

EcosystemPackageAffectedFixed in
Go github.com/l3montree-dev/devguard < 1.2.2 1.2.2

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact 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. ### Patches The release v1.2.2 patches this issue. Update your DevGuard API Instances to this version. ### Workarounds Configure a reverse proxy to strip the `X-Admin-Token` header before sending requests to the DevGuard API. ### Resources Fixed commit: https://github.com/l3montree-dev/devguard/commit/6f38310bf93b2a63df3055038f4da82b1f4e6d9a

References

External links from the advisory. They lead to third-party sites.