CVE-2026-114641: 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.x before 3.7.14

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

Remote attackers can send concurrent HTTP/2 or HTTP/3 requests over one connection to orphan backend connections, break connection-bound authentication, or crash Traefik. Vendor/CNA’s CVSS 4.0 assessment (base score 6.3/10) rates confidentiality and integrity impact as none; availability impact as low.