{"id":"CVE-2026-114635","aliases":["EUVD-2026-107890","GHSA-fh26-gfpp-7xxx","GHSA-m6hw-6pp7-2ffc","openSUSE-SU-2026:12281-1"],"status":"published","title":"Traefik before v2.11.58 and v3.7.14 SNI Check Bypass via HTTP/2 Scheme","description":"Traefik before v2.11.58 and v3.7.14 contains an authentication bypass vulnerability in its SNI check, which is skipped when request TLS state is nil. Unauthenticated clients can send HTTP/2 requests with the :scheme http pseudo-header over TLS on Go 1.27 builds to reach routers requiring client certificates without presenting one.","severity":{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-07","score":0.00188,"percentile":0.08474,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-288"],"published":"2026-10-22T01:43:36Z","modified":"2026-11-05T21:15:46Z","affected":[{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"traefik","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.16-1.1"}]}],"bundled":9}],"products":[{"vendor":"traefik","product":"traefik"}],"references":[{"url":"https://github.com/traefik/traefik/security/advisories/GHSA-fh26-gfpp-7xxx","tags":["vendor-advisory","Vendor Advisory","advisory"]},{"url":"https://www.vulncheck.com/advisories/traefik-before-2.11.58-and-3.7.14-sni-check-bypass-via-http-2-scheme","tags":["third-party-advisory","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114635","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-m6hw-6pp7-2ffc"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114635.json","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-114635","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-114636","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-114637","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-114638","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-114639","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-114640","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-114641","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-114642","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-114656","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-114635","title":"Traefik before v2.11.58 and v3.7.14 SNI Check Bypass via HTTP/2 Scheme","description":"Traefik before v2.11.58 and v3.7.14 contains an authentication bypass vulnerability in its SNI check, which is skipped when request TLS state is nil. Unauthenticated clients can send HTTP/2 requests with the :scheme http pseudo-header over TLS on Go 1.27 builds to reach routers requiring client certificates without presenting one.","status":"published","published":"2026-10-22T01:43:36.508Z","modified":"2026-11-04T15:57:43.916Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-288"],"updated_at":"2026-11-04T16:33:47.459854Z"}],"euvd":[{"id":"EUVD-2026-107890","description":"Traefik before v2.11.58 and v3.7.14 contains an authentication bypass vulnerability in its SNI check, which is skipped when request TLS state is nil. Unauthenticated clients can send HTTP/2 requests with the :scheme http pseudo-header over TLS on Go 1.27 builds to reach routers requiring client certificates without presenting one.","status":"published","published":"2026-10-22T01:43:36Z","modified":"2026-11-04T15:57:43Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","level":"high"}],"updated_at":"2026-11-04T17:11:50.285046Z"}],"ghsa":[{"id":"GHSA-m6hw-6pp7-2ffc","title":"Traefik before v2.11.58 and v3.7.14 contains an authentication bypass vulnerability in its SNI...","description":"Traefik before v2.11.58 and v3.7.14 contains an authentication bypass vulnerability in its SNI check, which is skipped when request TLS state is nil. Unauthenticated clients can send HTTP/2 requests with the :scheme http pseudo-header over TLS on Go 1.27 builds to reach routers requiring client certificates without presenting one.","status":"published","published":"2026-10-22T03:33:33Z","modified":"2026-10-22T03:33:42Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T15:14:14.973906Z"}],"nvd":[{"id":"CVE-2026-114635","description":"Traefik before v2.11.58 and v3.7.14 contains an authentication bypass vulnerability in its SNI check, which is skipped when request TLS state is nil. Unauthenticated clients can send HTTP/2 requests with the :scheme http pseudo-header over TLS on Go 1.27 builds to reach routers requiring client certificates without presenting one.","status":"published","published":"2026-10-22T02:16:56.14Z","modified":"2026-11-04T16:17:41.593Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-288"],"updated_at":"2026-11-04T18:06:23.114074Z"}],"osv":[{"id":"CVE-2026-114635","title":"Traefik before v2.11.58 and v3.7.14 SNI Check Bypass via HTTP/2 Scheme","description":"Traefik before v2.11.58 and v3.7.14 contains an authentication bypass vulnerability in its SNI check, which is skipped when request TLS state is nil. Unauthenticated clients can send HTTP/2 requests with the :scheme http pseudo-header over TLS on Go 1.27 builds to reach routers requiring client certificates without presenting one.","status":"published","published":"2026-10-22T01:43:36.508Z","modified":"2026-11-05T21:15:46.723538806Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","level":"high"}],"cwes":["CWE-288"],"updated_at":"2026-11-05T22:01:21.792402Z"},{"id":"openSUSE-SU-2026:12281-1","title":"traefik-3.7.16-1.1 on GA media","description":"These are all security issues fixed in the traefik-3.7.16-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-10-26T00:00:00Z","modified":"2026-10-27T17:23:18.007060995Z","updated_at":"2026-11-02T16:58:40.245664Z"}]}}