Authentication Bypass Using an Alternate Path or Channel Affecting github.com/l3montree-dev/devguard/integrations/gitlabint package, versions <1.2.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOML3MONTREEDEVDEVGUARDINTEGRATIONSGITLABINT-16424182
- published6 May 2026
- disclosed5 May 2026
- creditUnknown
Introduced: 5 May 2026
CVE-2026-42300 Â (opens in a new tab)How to fix?
Upgrade github.com/l3montree-dev/devguard/integrations/gitlabint to version 1.2.2 or higher.
Overview
Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel in the SessionMiddleware process when the X-Admin-Token HTTP header is accepted from the client and its raw value is used as the authenticated user ID if no Kratos session cookie is present. An attacker can gain unauthorized access and perform actions as another user, including full control over organization resources, by supplying a known or guessed Kratos identity UUID in the header.
Workaround
This vulnerability can be mitigated by configuring a reverse proxy to strip the X-Admin-Token header before forwarding requests.