CVE-2026-114642: traefik 2.11.0 to before 2.11.58, 3.0.0 to before 3.7.14

Affected technology

traefik · 2.11.0 to before 2.11.58
traefik

traefik · 3.0.0 to before 3.7.14
traefik

Description’s affected range: 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

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 4.0 assessment (base score 7.0/10) rates confidentiality, integrity and availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.