All vulnerabilities

Servers and applications

CVE-2026-112778

Traefik before 2.11.46, 3.x before 3.6.17, and 3.7.0 lack namespace validation for Ingress and Service annotations in the Kubernetes Ingress provider, allowing references to Middlewares, ServersTransports, and TLSOptions in other namespaces. Attackers able to create or update Ingress or Service resources in one namespace can set router.middlewares or service.serverstransport annotations to…

Severity
Medium 6.4
Published
19 Oct 2026
Last changed
23 Oct 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.11.46, 3.6.16
Sources
NVD

Affected software

SoftwareAffected versions
TraefikServers and applications · cpe:a:traefik:traefik
  • Every version before 2.11.46
  • From 3.0.0 before 3.6.16
  • Version 3.7.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-112778
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-112778