{"id":"CVE-2026-30836","state":"PUBLISHED","title":"Step CA: Unauthenticated Certificate Issuance via SCEP UpdateReq (MessageType=18)","description":"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.","publishedAt":"2026-03-19T20:37:05.757Z","updatedAt":"2026-03-25T14:16:09.012Z","severity":{"score":10,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["smallstep certificates"],"affected":[{"vendor":"smallstep","product":"certificates","versions":[{"version":"< 0.30.0","status":"affected"}]}],"references":["https://github.com/smallstep/certificates/security/advisories/GHSA-q4r8-xm5f-56gw","https://github.com/smallstep/certificates/commit/e6da031d5125cfd99fe9a26f74bb41e4dacca4ef","https://github.com/smallstep/certificates/releases/tag/v0.30.0-rc7"],"weaknesses":["CWE-287","CWE-295"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/30xxx/CVE-2026-30836.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-30836","state":"PUBLISHED","datePublished":"2026-03-19T20:37:05.757Z","dateUpdated":"2026-03-25T14:16:09.012Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-05T21:06:44.606Z"},"containers":{"cna":{"title":"Step CA: Unauthenticated Certificate Issuance via SCEP UpdateReq (MessageType=18)","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"smallstep","product":"certificates","versions":[{"version":"< 0.30.0","status":"affected"}]}],"references":[{"url":"https://github.com/smallstep/certificates/security/advisories/GHSA-q4r8-xm5f-56gw","name":"https://github.com/smallstep/certificates/security/advisories/GHSA-q4r8-xm5f-56gw","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/smallstep/certificates/commit/e6da031d5125cfd99fe9a26f74bb41e4dacca4ef","name":"https://github.com/smallstep/certificates/commit/e6da031d5125cfd99fe9a26f74bb41e4dacca4ef","tags":["x_refsource_MISC"]},{"url":"https://github.com/smallstep/certificates/releases/tag/v0.30.0-rc7","name":"https://github.com/smallstep/certificates/releases/tag/v0.30.0-rc7","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-295","lang":"en","description":"CWE-295: Improper Certificate Validation","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-19T20:37:05.757Z"},"source":{"advisory":"GHSA-q4r8-xm5f-56gw","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-25T14:15:50.363882Z","id":"CVE-2026-30836","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-25T14:16:09.012Z"}}]}}}