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CVE-2026-29777

Traefik has a kubernetes gateway rule injection via unescaped backticks in HTTPRoute match values

Published: Mar 11, 2026Updated: Mar 19, 2026 Sources: CVE List NVD GHSACWE-74
6.5MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 80.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-74

Affected Products

Go
package-ecosystem
github.com/traefik/traefik/v3
OSS Libraries
github.com/traefik/traefik
OSS Libraries
github.com/traefik/traefik/v2
OSS Libraries
traefik
oss-projectaka traefik enterprise
traefikOn-prem
Networking Infrastructure / load-balancer-proxy

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/traefik/traefik/releases/tag/v3.6.10
github.com
https://github.com/traefik/traefik/security/advisories/GHSA-8q2w-wr49-whqj
github.com
https://nvd.nist.gov/vuln/detail/CVE-2026-29777
nvd.nist.gov
and 1 more references View all →

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