CVE-2026-65601
Last modified
CVE-2026-65601 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Traefik versions 3.7.0 through 3.7.6 contain a namespace confusion vulnerability in the Kubernetes Gateway API provider. When resolving HTTPRoute.spec.rules[].backendRefs[].filters[].extensionRef, Traefik used the backend Service namespace instead of the HTTPRoute namespace. EPSS estimates a 0.41% chance of exploitation in the next 30 days.
Description
Traefik versions 3.7.0 through 3.7.6 contain a namespace confusion vulnerability in the Kubernetes Gateway API provider. When resolving HTTPRoute.spec.rules[].backendRefs[].filters[].extensionRef, Traefik used the backend Service namespace instead of the HTTPRoute namespace. A low-privileged route author holding a ReferenceGrant for a cross-namespace Service could therefore bind a Traefik Middleware from the backend namespace without a separate grant for that middleware, potentially injecting trusted reverse-proxy identity headers into downstream requests. The issue is fixed in version 3.7.7.
Metrics
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
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| traefik | traefik | >= 3.7.0, < 3.7.7 |
References
Timeline
- Published
- Last Modified
- Status
- Undergoing Analysis
Frequently Asked Questions
What is CVE-2026-65601?
How severe is CVE-2026-65601?
How do I fix CVE-2026-65601?
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-2026-65596n8n before 1.123.64, 2.29.8, and 2.30.1 fails to enforce the…8.1
- 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-2026-65602Traefik 3.6.0 through 3.6.22 and 3.7.0 through 3.7.6 fail to…8.8
- 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
Are you affected by CVE-2026-65601?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST