CVE-2026-41174Disclosure(traefik / traefik)

LOWCVSS 6.4 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is a potential vulnerability in Traefik's Kubernetes CRD provider cross-namespace isolation enforcement. When providers.kubernetesCRD.allowCrossNamespace=false, Traefik correctly rejects direct cross-namespace middleware references from IngressRoute objects, but fails to apply the same restriction to middleware references nested inside a Chain middleware's spec.chain.middlewares[]. An actor with permission to create or update Traefik CRDs in their own namespace can exploit this to cause Traefik to resolve and apply middleware objects from another namespace, bypassing the documented isolation boundary. This issue has been patched in versions 2.11.43, 3.6.14, and 3.7.0-rc.2.

traefik CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Patch / fix

Exploit / PoC references

https://github.com/traefik/traefik/security/advisories/GHSA-xhjw-95fp-8vgq

Other references

Weakness type (CWE)

CWE-653CWE-863

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

traefik

Threat summary

3 mentions across 2 observed days
Momentum state: stable

What's happening

Technical details provided in 2 signals
Disclosure: 3 classified signals
Peaked 1d ago at 2 mentions (2026-04-30); latest day: 1
3 total mentions across 2 days

Affected systems

Vendors

traefik

Products

traefik

1 version affected across 1 product

Deep dive

Activity timeline3 mentions / 2d

Signal classification1 categories

Disclosure

3100.0%

Referenced assets3 URLs

By indicator

Classification over time

Date	Total	Labels

2026-04-30	2	Disclosure2
2026-05-01	1	Disclosure1

Full discourse3 posts

CVE@CVEnew162d
Disclosure
CVE-2026-41174 Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is a potential vulnerability in Traefik's Kubernetes CRD … https://www.cve.org/CVERecord?id=CVE-2026-41174
Post summary
The post announces CVE-2026-41174, noting that Traefik versions prior to 2.11.43, 3.6.14, and 3.7.0-rc.2 may have a vulnerability in their Kubernetes CRD, but does not provide exploitation details or a patch.
00010117
57.4K followersView on X
Vulmon Vulnerability Feed@VulmonFeeds162d
Disclosure
CVE-2026-41174 Cross-Namespace Isolation Bypass in Traefik Kubernetes CRD Provider https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-41174
Post summary
A brief disclosure notice indicates a cross‑namespace isolation bypass vulnerability in the Traefik Kubernetes CRD provider, with no additional details on exploitation, PoCs, or mitigation available.
0000036
4.0K followersView on X
Infoflowcloud@infoflowcloud162d
Disclosure
🚨*CVE* CVE-2026-41174 Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is a potential vulnerability in Traefik's Kubernetes CRD … https://www.cve.org/CVERecord?id=CVE-2026-41174 ----- Traducción: CVE-2026-41174 Tra… http://infoflow.cloud`
Post summary
The message announces that CVE‑2026‑41174 affects Traefik versions prior to 2.11.43, 3.6.14, and 3.7.0‑rc.2, highlighting a potential vulnerability in the Kubernetes CRD.
0000014
75 followersView on X

CPE platform detail5 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

5 of 5 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	traefik	traefik	-	-	-
App	traefik	traefik	3.7.0	-	-
App	traefik	traefik	3.7.0	-	-
App	traefik	traefik	3.7.0	-	-
App	traefik	traefik	3.7.0	-	-

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