{"id":"CVE-2026-30836","summary":"Step CA: Unauthenticated Certificate Issuance via SCEP UpdateReq (MessageType=18)","details":"Step CA is an online certificate authority for secure, automated certificate management for DevOps. Versions 0.30.0-rc6 and below do not safeguard against unauthenticated certificate issuance through the SCEP UpdateReq. This issue has been fixed in version 0.30.0.","aliases":["GHSA-q4r8-xm5f-56gw","GO-2026-4775"],"modified":"2026-04-10T05:41:54.337832Z","published":"2026-03-19T20:37:05.757Z","related":["CGA-cx83-mwx5-9w47","SUSE-SU-2026:1135-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30836.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-287","CWE-295"]},"references":[{"type":"WEB","url":"https://github.com/smallstep/certificates/releases/tag/v0.30.0-rc7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30836.json"},{"type":"ADVISORY","url":"https://github.com/smallstep/certificates/security/advisories/GHSA-q4r8-xm5f-56gw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-30836"},{"type":"FIX","url":"https://github.com/smallstep/certificates/commit/e6da031d5125cfd99fe9a26f74bb41e4dacca4ef"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/smallstep/certificates","events":[{"introduced":"0"},{"fixed":"e6da031d5125cfd99fe9a26f74bb41e4dacca4ef"}]},{"type":"GIT","repo":"https://github.com/smallstep/certificates","events":[{"introduced":"0"},{"fixed":"d34619c55e5cd46ce08d8bdb8c846df2c4d8aca0"}]}],"versions":["v0.0.1-rc.2","v0.10.0","v0.11.0","v0.11.0-rc.1","v0.11.0-rc.2","v0.11.0-rc.3","v0.11.0-rc.4","v0.12.0","v0.13.0","v0.13.1","v0.13.2","v0.13.3","v0.14.0","v0.14.0-rc.1","v0.14.0-rc.14","v0.14.0-rc.16","v0.14.0-rc.2","v0.14.0-rc.3","v0.14.0-rc.5","v0.14.0-rc.6","v0.14.0-rc.7","v0.14.0-rc.8","v0.14.0-rc.9","v0.14.1","v0.14.2","v0.14.3","v0.14.4","v0.14.5","v0.14.5-rc.4","v0.14.6","v0.15.0","v0.15.0-rc.1","v0.15.1","v0.15.1-rc.1","v0.15.10","v0.15.11","v0.15.12","v0.15.13","v0.15.14","v0.15.15","v0.15.16","v0.15.16-rc4","v0.15.16-rc5","v0.15.2","v0.15.2-rc.1","v0.15.3","v0.15.4","v0.15.5","v0.15.6","v0.15.7","v0.15.7-rc.1","v0.15.8","v0.15.9","v0.15.9-rc13","v0.15.9-rc14","v0.15.9-rc15","v0.15.9-rc16","v0.15.9-rc17","v0.15.9-rc19","v0.16.0","v0.16.0-rc.2","v0.16.1","v0.16.2","v0.16.3","v0.16.4","v0.17.0","v0.17.0-rc1","v0.17.1","v0.17.2","v0.17.3","v0.17.4","v0.17.5","v0.17.6","v0.17.6-rc2","v0.18.0","v0.18.1","v0.18.1-rc1","v0.18.1-rc2","v0.18.1-rc3","v0.18.2","v0.18.3-rc1","v0.19.0","v0.20.0","v0.21.0","v0.22.0","v0.22.1","v0.23.0","v0.23.0-rc.1","v0.23.0-rc.2","v0.23.0-rc.3","v0.23.1","v0.23.1-rc.1","v0.23.2","v0.24.0","v0.24.1","v0.24.2","v0.24.3-rc.3","v0.24.3-rc.4","v0.24.3-rc.5","v0.25.0","v0.25.1","v0.25.2","v0.25.3-rc2","v0.25.3-rc5","v0.25.3-rc6","v0.26.0","v0.26.0-rc1","v0.26.0-rc2","v0.26.1","v0.26.2","v0.27.0","v0.27.1","v0.27.2","v0.27.3","v0.27.4","v0.27.5","v0.28.0","v0.28.1","v0.28.2","v0.28.3-rc1","v0.28.3-rc2","v0.28.4","v0.29.0","v0.30.0-rc1","v0.30.0-rc3","v0.30.0-rc4","v0.8.1","v0.8.1-rc.1","v0.8.1-rc.2","v0.8.2","v0.8.2-rc.1","v0.8.3","v0.8.4","v0.8.4-rc.1","v0.8.4-rc.2","v0.8.5","v0.8.5-rc.5","v0.9.0","v0.9.0-rc.1","v0.9.1","v0.9.1-rc.1","v0.9.1-rc.2","v0.9.2","v0.9.2-rc.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-30836.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N"}]}