High 7.6Published Aug 6, 2026

CVE-2026-71327Traefik: Gateway API route identity collision allows cross-namespace backend hijacking

Updated under an hour ago (2026-10-19 08:30 UTC)

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It affects traefik. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for traefik

Exploited in the last 30 days

Traefik is an open source HTTP reverse proxy and load balancer. From 3.0.0 until 3.6.25 and 3.7.10, Traefik's Kubernetes Gateway API provider in pkg/provider/kubernetes/gateway/httproute.go, grpcroute.go, tcproute.go, and tlsroute.go builds HTTPRoute, GRPCRoute, TCPRoute, and TLSRoute router and service identities by hyphen-concatenating namespace, route name, Gateway identity, entry point, and rule index, allowing colliding Routes to overwrite another namespace's backend. This issue is fixed in 3.6.25 and 3.7.10.

CVSS: 7.6 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-694
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Aug 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

traefik traefik traefik:traefik (from the name)	from 3.0.0, < 3.6.25; from 3.7.0, < 3.7.10	CNA record
traefik traefik traefik:traefik	from 3.0.0 before 3.6.25; from 3.7.0 before 3.7.10	NVD

References

https://github.com/traefik/traefik/security/advisories/GHSA-fgjj-px3w-67xxx-refsource-confirm, patch, vendor-advisory
https://github.com/traefik/traefik/pull/13580x-refsource-misc, issue-tracking, patch
https://github.com/traefik/traefik/commit/a764166656f0cd337f917ac76315c381cca844f9x-refsource-misc, patch
https://github.com/traefik/traefik/releases/tag/v3.6.25x-refsource-misc, patch, release-notes
https://github.com/traefik/traefik/releases/tag/v3.7.10x-refsource-misc, patch, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.