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.
History

Fri, 13 Mar 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-94
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N'}

threat_severity

Moderate


Thu, 12 Mar 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Traefik
Traefik traefik
Vendors & Products Traefik
Traefik traefik

Wed, 11 Mar 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 11 Mar 2026 16:15:00 +0000

Type Values Removed Values Added
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.
Title Traefik has a kubernetes gateway rule injection via unescaped backticks in HTTPRoute match values
Weaknesses CWE-74
References
Metrics cvssV4_0

{'score': 6.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-03-11T15:54:17.219Z

Updated: 2026-03-11T17:22:36.189Z

Reserved: 2026-03-04T16:26:02.898Z

Link: CVE-2026-29777

cve-icon Vulnrichment

Updated: 2026-03-11T17:22:25.497Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-11T16:16:40.830

Modified: 2026-03-12T21:08:22.643

Link: CVE-2026-29777

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-03-11T15:54:17Z

Links: CVE-2026-29777 - Bugzilla