github.com
https://github.com/traefik/traefik CVE-2026-29777
MEDIUM
Traefik has a kubernetes gateway rule injection via unescaped backticks in HTTPRoute match values
Record summary
CVE-2026-29777 has a selected CVSS score of 6.1 (medium).
Description
Traefik is an HTTP reverse proxy and load balancer. Prior to 3.6.10, A tenant with write access to an HTTPRoute resource can inject backtick-delimited rule tokens into Traefik's router rule language via unsanitized header or query parameter match values. In shared gateway deployments, this can bypass listener hostname constraints and redirect traffic for victim hostnames to attacker-controlled backends. This vulnerability is fixed in 3.6.10.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationNone
AutomatableNo
Technical impactPartial
CISA Coordinator · SSVC 2.0.3 · Evaluated Mar 11, 2026 · Source: CVE List
Affected products and versions
4| Product | Source | Version range | Status |
|---|---|---|---|
traefikBrowse traefik / traefik | CVE List | < 3.6.10 | affected |
github.com/traefik/traefikBrowse Go / github.com/traefik/traefik | GitHub Advisory | Through 1.7.34 | affected |
github.com/traefik/traefik/v2Browse Go / github.com/traefik/traefik/v2 | GitHub Advisory | Through 2.11.40 | affected |
github.com/traefik/traefik/v3Browse Go / github.com/traefik/traefik/v3 | GitHub Advisory | Before 3.6.10 · Fixed in 3.6.10 | affected |
References
4github.com
https://github.com/traefik/traefik/releases/tag/v3.6.10 github.comConfirmation
https://github.com/traefik/traefik/security/advisories/GHSA-8q2w-wr49-whqj nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2026-29777