{"id":"CVE-2026-114641","title":"Traefik before 2.11.58 and 3.7.14 Race Condition in NTLM/Kerberos Round Tripper","summary":"Traefik 2.11.x before 2.11.58 and 3.x before 3.7.14 contains a race condition in NTLM and Kerberos (Negotiate) backend authentication, where the per-connection sticky round tripper slot is read and written without synchronization. Remote…","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","cvssSource":"cna","cwe":["CWE-362"],"vendor":"traefik","product":"traefik","affected":["traefik >= 2.11.0 < 2.11.58","traefik >= 3.0.0 < 3.7.14"],"published":"2026-10-22","updated":"2026-10-22","sourceUpdated":"2026-10-22T01:43:40.663Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-114641","references":[{"url":"https://github.com/traefik/traefik/security/advisories/GHSA-mhjw-hmjv-p99x","label":"GitHub Security Advisory (GHSA-mhjw-hmjv-p99x)"},{"url":"https://www.vulncheck.com/advisories/traefik-before-2.11.58-and-3.7.14-race-condition-in-ntlm-kerberos-round-tripper","label":"VulnCheck Advisory: Traefik before 2.11.58 and 3.7.14 Race Condition in NTLM/Kerberos Round Tripper"}],"tags":["cve.org"],"ingestedAt":"2026-10-22T02:23:25.183Z","slug":"CVE-2026-114641","body":"## Overview\n\nTraefik 2.11.x before 2.11.58 and 3.x before 3.7.14 contains a race condition in NTLM and Kerberos (Negotiate) backend authentication, where the per-connection sticky round tripper slot is read and written without synchronization. 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.\n\n## Affected\n\n- `traefik >= 2.11.0 < 2.11.58`\n- `traefik >= 3.0.0 < 3.7.14`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":20.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}