CVE-2026-32695

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 3.6.11 and 3.7.0-ea.2, Traefik's Knative provider builds router rules by interpolating user-controlled values into backtick-delimited rule expressions without escaping. In live cluster validation, Knative `rules[].hosts[]` was exploitable for host restriction bypass (for example `tenant.example.com`) || Host(`attacker.com`), producing a router that serves attacker-controlled hosts. Knative `headers[].exact` also allows rule-syntax injection and proves unsafe rule construction. In multi-tenant clusters, this can route unauthorized traffic to victim services and lead to cross-tenant traffic exposure. Versions 3.6.11 and 3.7.0-ea.2 patch the issue.

CVSS v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.1 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/traefik/traefik/releases/tag/v3.6.11	Product Release Notes
https://github.com/traefik/traefik/releases/tag/v3.7.0-ea.2	Product Release Notes
https://github.com/traefik/traefik/security/advisories/GHSA-67jx-r9pv-98rj	Exploit Patch Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:10175
https://access.redhat.com/security/cve/CVE-2026-32695
https://bugzilla.redhat.com/show_bug.cgi?id=2452235
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32695.json

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:traefik:traefik::::::::
	cpe:2.3:a:traefik:traefik:3.7.0:ea1::::::

History

No history.

Information

Published : 2026-03-27 14:16

Updated : 2026-07-15 02:20

NVD link : CVE-2026-32695

Mitre link : CVE-2026-32695

CVE.ORG link : CVE-2026-32695

JSON object : View

Products Affected

traefik

traefik

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-917

Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')

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