CVE-2026-65602
Last modified
CVE-2026-65602 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Traefik 3.6.0 through 3.6.22 and 3.7.0 through 3.7.6 fail to enforce the crossProviderNamespaces allowlist for IngressRouteTCP service serversTransport references (the allowlist was only enforced for HTTP serversTransport references). A low-privileged Kubernetes user in a namespace not listed in crossProviderNamespaces can set serversTransport: foo@file on an IngressRouteTCP service, causing Traefik to accept the forbidden cross-provider reference and use a file-provider TCPServersTransport — including privileged backend mTLS client certificates, SPIFFE identity, or PROXY-protocol settings. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
Description
Traefik 3.6.0 through 3.6.22 and 3.7.0 through 3.7.6 fail to enforce the crossProviderNamespaces allowlist for IngressRouteTCP service serversTransport references (the allowlist was only enforced for HTTP serversTransport references). A low-privileged Kubernetes user in a namespace not listed in crossProviderNamespaces can set serversTransport: foo@file on an IngressRouteTCP service, causing Traefik to accept the forbidden cross-provider reference and use a file-provider TCPServersTransport — including privileged backend mTLS client certificates, SPIFFE identity, or PROXY-protocol settings. This is fixed in 3.6.23 and 3.7.7.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Traefik | Traefik | >= 3.6.0, < 3.6.23 |
| Traefik | Traefik | >= 3.7.0, < 3.7.7 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-65602?
How severe is CVE-2026-65602?
How do I fix CVE-2026-65602?
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-65597n8n before 1.123.64, 2.x before 2.29.8, and before 2.30.1 co…5.4
- CVE-2026-65598n8n before 1.123.64, 2.29.8, and 2.30.1 contains a TOCTOU ra…7.5
- CVE-2026-65599n8n versions before 1.123.64, 2.29.8, and 2.30.1 contain a c…6.5
- CVE-2026-6560A security vulnerability has been detected in H3C Magic B0 u…8.8
- CVE-2026-65600Traefik versions <= v2.11.51, >= v3.6.0 <= v3.6.22, and >= v…5.3
- CVE-2026-65601Traefik versions 3.7.0 through 3.7.6 contain a namespace con…5.3
- CVE-2026-65603The Grav Login plugin (grav-plugin-login) versions <= 3.8.11…8.8
- CVE-2026-65604Skipper contains an incomplete fix for CVE-2026-50197 in whi…8.8
- CVE-2026-65605SiYuan before v3.7.2 contains a stored cross-site scripting …9.6
- CVE-2026-65606SiYuan before v3.7.2 contains a cross-site scripting vulnera…9.6
- CVE-2026-65607SiYuan before v3.7.2 contains a path traversal vulnerability…7.1
- CVE-2026-65608Grav versions >= 1.7.0 and before 2.0.9 contain a remote cod…8.8
Are you affected by CVE-2026-65602?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST