{"id":"CVE-2026-79664","revision":"9ce3e50a688c41bd8ea4c305a93cc4c0","records":[{"revision":"9ce3e50a688c41bd8ea4c305a93cc4c0","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-79664","aliases":[],"title":"Ech0 before 4.7.3 Access Token Revocation Bypass","description":"Ech0 before 4.7.3 fails to properly revoke access tokens created with never-expire option, allowing attackers to maintain perpetual authenticated access after token theft. Three independent revocation mechanisms fail: logout panics on nil ExpiresAt field, RevokeToken skips when remainTTL is zero, and admin delete does not blacklist the JTI, leaving stolen tokens cryptographically valid until JWT secret rotation.","state":0,"publishedAt":"2026-08-25T11:33:27.375+00:00","modifiedAt":"2026-10-08T15:25:14.377+00:00","affected":[{"ecosystem":"Vendor product","name":"Ech0","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"lin-snow\",\n                    \"product\": \"Ech0\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:golang/github.com/lin-snow/ech0\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"4.7.3\"\n                        },\n                        {\n                            \"version\": \"4.7.3\",\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:H/VI:H/VA:N/SC:N/SI:N/SA:N","score":9.1,"severity":"CRITICAL"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","score":7.4,"severity":"HIGH"}],"references":["https://github.com/lin-snow/Ech0/security/advisories/GHSA-fpw6-hrg5-q5x5","https://www.vulncheck.com/advisories/ech0-before-access-token-revocation-bypass"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-79664","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-79664","identifiers":["CVE-2026-79664"]},"retained":false,"historicalAffected":[]}],"coverage":[]}