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Vulnerabilities

Security fix · CVE-2026-71325

Traefik is an open-source edge router that makes publishing services a fun and easy experience.

Published Aug 6, 2026 · catalog updated Sep 16, 2026 · Traefik is an open-source

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-71325. EPSS is 0.15%. Act only if a listed version of Traefik is an open-source is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Traefik is an open-source).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium4.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.15%
Remediation
Version ranges on file
Affected products
cpe traefik/traefik

Traefik is an open-source edge router that makes publishing services a fun and easy experience. Prior to 2.11.54, 3.6.25, and 3.7.10, cross-namespace @kubernetescrd references are not rejected for TraefikService backend references resolved by the service resolver. A tenant confined by RBAC to a single namespace can therefore bind its own router to a TraefikService owned by another namespace and expose or reroute that namespace's backend, defeating the namespace isolation allowCrossNamespace=false is meant to enforce. This issue is fixed in version 2.11.54, 3.6.25, 3.7.10.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe traefik/traefik< 2.11.54
  • cpe traefik/traefik< 3.6.25
  • cpe traefik/traefik>= 3.7.0, <= 3.7.10

How to fix CVE-2026-71325

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-71325. EPSS is 0.15%. Act only if a listed version of Traefik is an open-source is installed.

Which versions are affected?

Compare what you have installed with < 2.11.54, < 3.6.25, >= 3.7.0, <= 3.7.10. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-653; CWE-863: Incorrect Authorization. EPSS 0.15%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Traefik security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 6, 2026 · Monitored products — high

    Detected

    Traefik is an open-source edge router that makes publishing services a fun and easy experience. Prior to 2.11.54, 3.6.25, and 3.7.10, cross-namespace @kubernetescrd references are not rejected for TraefikService backend references resolved by the service resolver. A tenant confined by RBAC to a single namespace can therefore bind its own router to a TraefikService owned by another namespace and ex

  2. Sep 16, 2026 · Monitored products — high

    Updated

    Traefik is an open-source edge router that makes publishing services a fun and easy experience. Prior to 2.11.54, 3.6.25, and 3.7.10, cross-namespace @kubernetescrd references are not rejected for TraefikService backend references resolved by the service resolver. A tenant confined by RBAC to a single namespace can therefore bind its own router to a TraefikService owned by another namespace and ex

Sources

  • CVE.orgVulnerability recordCVE-2026-71325

    Official CVE identifier

    cve.org
  • Monitored products — highVendor advisoryCVE-2026-71325

    Traefik is an open-source edge router that makes publishing services a fun and easy experience. Prior to 2.11.54, 3.6.25, and 3.7.10, cross-namespace @kubernetescrd references are not rejected for TraefikService backend references resolved by the service resolver. A tenant confined by RBAC to a single namespace can therefore bind its own router to a TraefikService owned by another namespace and ex

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • Monitored products — highNov 2, 2026