{"id":"CVE-2026-114641","revision":"00a4b92733eb465387af20afb3f2fbb6","records":[{"revision":"00a4b92733eb465387af20afb3f2fbb6","observedAt":"2026-10-28T19:46:48.975+00:00","statement":{"source":"cve-program","id":"CVE-2026-114641","aliases":[],"title":"Traefik before 2.11.58 and 3.7.14 Race Condition in NTLM/Kerberos Round Tripper","description":"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 attackers can send concurrent HTTP/2 or HTTP/3 requests over one connection to orphan backend connections, break connection-bound authentication, or crash Traefik.","state":0,"publishedAt":"2026-10-22T01:43:40.663+00:00","modifiedAt":"2026-10-28T18:58:55.522+00:00","affected":[{"ecosystem":"Vendor product","name":"traefik","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"traefik\",\n                    \"product\": \"traefik\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:golang/github.com/traefik/traefik/v2\",\n                    \"versions\": [\n                        {\n                            \"version\": \"2.11.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"2.11.58\"\n                        },\n                        {\n                            \"version\": \"2.11.58\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"traefik","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"traefik\",\n                    \"product\": \"traefik\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:golang/github.com/traefik/traefik/v3\",\n                    \"versions\": [\n                        {\n                            \"version\": \"3.0.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"3.7.14\"\n                        },\n                        {\n                            \"version\": \"3.7.14\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":6.3,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","score":3.7,"severity":"LOW"}],"references":["https://github.com/traefik/traefik/security/advisories/GHSA-mhjw-hmjv-p99x","https://www.vulncheck.com/advisories/traefik-before-2.11.58-and-3.7.14-race-condition-in-ntlm-kerberos-round-tripper"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-114641","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-114641","identifiers":["CVE-2026-114641"]},"retained":false,"historicalAffected":[]}],"coverage":[]}