Use of Incorrectly-Resolved Name or Reference Affecting github.com/traefik/traefik/pkg/middlewares/stripprefix package, versions <2.11.43>=3.0.0-beta1 <3.6.14>=3.7.0-ea.1 <3.7.0-rc.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.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMTRAEFIKTRAEFIKPKGMIDDLEWARESSTRIPPREFIX-16301627
- published27 Apr 2026
- disclosed24 Apr 2026
- creditNicholas Gould
Introduced: 24 Apr 2026
CVE-2026-40912 Â (opens in a new tab)How to fix?
Upgrade github.com/traefik/traefik/pkg/middlewares/stripprefix to version 2.11.43, 3.6.14, 3.7.0-rc.2 or higher.
Overview
Affected versions of this package are vulnerable to Use of Incorrectly-Resolved Name or Reference in StripPrefixRegex, when used together with ForwardAuth, BasicAuth, or DigestAuth. An attacker can gain unauthorized access to protected backend resources by sending requests with percent-encoded dot segments in the URL path, which bypass authentication checks due to a mismatch between decoded and raw path handling.