{"id":"CVE-2025-66406","summary":"Improper Authorization Check for SSH Certificate Revocation","details":"Step CA is an online certificate authority for secure, automated certificate management for DevOps. Prior to 0.29.0, there is an improper authorization check for SSH certificate revocation. This affects deployments configured with the SSHPOP provisioner. This vulnerability is fixed in 0.29.0.","aliases":["GHSA-j7c9-79x7-8hpr","GO-2025-4181"],"modified":"2026-10-24T02:31:40.182874166Z","published":"2025-12-03T19:13:48.240Z","related":["SUSE-SU-2025:4395-1","openSUSE-SU-2026:21483-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-863"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66406.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66406.json"},{"type":"ADVISORY","url":"https://github.com/smallstep/certificates/security/advisories/GHSA-j7c9-79x7-8hpr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66406"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/smallstep/certificates","events":[{"introduced":"0"},{"fixed":"992ff696e95b424a99140bd7edb2144013975059"}],"database_specific":{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StringRangeExpression","range":[{"introduced":"0"},{"fixed":"0.29.0"}]},{"range":[{"introduced":"0"},{"fixed":"0.29.0"}],"source":"DESCRIPTION"}]}}],"versions":["v0.28.4","v0.28.3-rc2","v0.28.3-rc1","v0.28.2","v0.28.1","v0.28.0","v0.27.5","v0.27.4","v0.27.3","v0.27.2","v0.27.1","v0.27.0","v0.26.2","v0.26.1","v0.26.0","v0.26.0-rc2","v0.26.0-rc1","v0.25.3-rc6","v0.25.3-rc5","v0.25.3-rc2","v0.25.2","v0.25.1","v0.25.0","v0.24.3-rc.5","v0.24.3-rc.4","v0.24.3-rc.3","v0.24.2","v0.24.1","v0.24.0","v0.23.2","v0.23.1-rc.1","v0.23.1","v0.23.0-rc.3","v0.23.0","v0.23.0-rc.2","v0.23.0-rc.1","v0.22.1","v0.22.0","v0.21.0","v0.20.0","v0.19.0","v0.18.3-rc1","v0.18.2","v0.18.1-rc3","v0.18.1","v0.18.1-rc2","v0.18.1-rc1","v0.18.0","v0.17.6","v0.17.6-rc2","v0.17.5","v0.17.4","v0.17.3","v0.17.1","v0.17.2","v0.17.0-rc1","v0.17.0","v0.16.4","v0.16.3","v0.16.2","v0.16.1","v0.16.0","v0.15.16-rc5","v0.15.16","v0.15.16-rc4","v0.15.15","v0.15.14","v0.15.13","v0.15.12","v0.15.11","v0.15.10","v0.15.9","v0.15.9-rc19","v0.15.9-rc17","v0.15.9-rc16","v0.15.9-rc15","v0.15.9-rc14","v0.15.9-rc13","v0.15.8","v0.15.7","v0.15.7-rc.1","v0.15.6","v0.15.5","v0.16.0-rc.2","v0.15.4","v0.15.3","v0.15.2-rc.1","v0.15.2","v0.15.1","v0.15.1-rc.1","v0.15.0","v0.14.6","v0.14.5","v0.14.5-rc.4","v0.14.4","v0.15.0-rc.1","v0.14.3","v0.14.2","v0.14.1","v0.14.0","v0.14.0-rc.16","v0.14.0-rc.14","v0.14.0-rc.9","v0.14.0-rc.8","v0.14.0-rc.7","v0.14.0-rc.6","v0.14.0-rc.5","v0.14.0-rc.3","v0.14.0-rc.2","v0.14.0-rc.1","v0.13.3","v0.13.2","v0.13.1","v0.13.0","v0.12.0","v0.11.0","v0.11.0-rc.4","v0.11.0-rc.3","v0.11.0-rc.2","v0.11.0-rc.1","v0.10.0","v0.9.2","v0.9.2-rc.1","v0.9.1-rc.2","v0.9.1","v0.9.1-rc.1","v0.9.0","v0.9.0-rc.1","v0.8.5-rc.5","v0.8.5","v0.8.4","v0.8.4-rc.2","v0.8.4-rc.1","v0.8.3","v0.8.2","v0.8.2-rc.1","v0.8.1","v0.8.1-rc.2","v0.8.1-rc.1","v0.0.1-rc.2"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-66406.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H"}]}