UpHeron
All vulnerabilities

Servers and applications

CVE-2026-114642

Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 stores its NTLM/Kerberos backend round tripper in a client-connection slot not keyed by ServersTransport, so one service's TLS client configuration is reused for another service's backend. An unauthenticated client can arm the slot via a backend issuing an NTLM or Negotiate challenge, then reach another service on the same keep-alive…

Severity
High 7.0
Published
22 Oct 2026
Last changed
27 Oct 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.11.58, 3.7.14
Sources
NVD

Affected software

SoftwareAffected versions
TraefikServers and applications · cpe:a:traefik:traefik
  • From 2.11.0 before 2.11.58
  • From 3.0.0 before 3.7.14

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-114642
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-114642