{"id":"CVE-2026-74877","summary":"openssl_encrypt before 1.4.0 Missing Ownership Verification via revoke_key","details":"openssl_encrypt versions before 1.4.0 contain a missing ownership verification vulnerability in the revoke_key method that allows authenticated clients to revoke any other client's key. Attackers can revoke arbitrary keys by providing a valid ML-DSA signature, bypassing the intended ownership restriction.","aliases":["GHSA-hvc7-763r-4f3h","PYSEC-2026-3743"],"modified":"2026-09-02T03:47:26.580749655Z","published":"2026-08-17T11:04:44.926Z","database_specific":{"cwe_ids":["CWE-639"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74877.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74877.json"},{"type":"ADVISORY","url":"https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-hvc7-763r-4f3h"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74877"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/openssl-encrypt-before-missing-ownership-verification-via-revoke-key"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/jahlives/openssl_encrypt","events":[{"introduced":"0"},{"fixed":"768df5cd1910e349509f07a27eeac6951e0003bf"}],"database_specific":{"cpe":"cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:python:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.4.0"}],"source":["AFFECTED_FIELD","CPE_RANGE"]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74877.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}