Go/github.com/traefik/traefik/v2 CVE-2026-40912: high 8.2, EPSS 0.77%

Traefik has an StripPrefixRegex Middleware Authorization Bypass via Path/RawPath Desync

Action: Upgrade github.com/traefik/traefik/v2 to 2.11.43 or later.

go get github.com/traefik/traefik/v2@v2.11.43

Affected

Fixed versions

Sources

• osv: GHSA-6jwx-7vp4-9847#Go/github.com/traefik/traefik/v2
• https://github.com/traefik/traefik/security/advisories/GHSA-6jwx-7vp4-9847
• https://nvd.nist.gov/vuln/detail/CVE-2026-40912
• https://access.redhat.com/errata/RHSA-2026:21772
• https://access.redhat.com/security/cve/CVE-2026-40912
• https://bugzilla.redhat.com/show_bug.cgi?id=2464229
• https://github.com/traefik/traefik
• https://github.com/traefik/traefik/releases/tag/v2.11.43
• https://github.com/traefik/traefik/releases/tag/v3.6.14
• https://github.com/traefik/traefik/releases/tag/v3.7.0-rc.2
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40912.json

CVE-2026-40912 · published 2026-04-24T16:37:53Z · modified 2026-07-21T14:00:32.843449384Z · JSON