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VULNERABILITIES

CVE-2026-29777 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/traefik/traefik/releases/tag/v3.6.10 [email protected]Release Notes
https://github.com/traefik/traefik/security/advisories/GHSA-8q2w-wr49-whqj [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')[email protected]

Affected Products

ProductVersions
traefik traefik
< 3.6.10

CPE

  • cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-29777
NVD Published Date:
Mar 11, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-29777 Details - Not Deferred