{"id":"CVE-2026-81700","summary":"openssl_encrypt before 1.4.9 GPG Signature Verification Bypass","details":"openssl_encrypt versions before 1.4.9 contain a signature verification vulnerability in gpg_runner.verify_detached that accepts revoked and expired keys by only checking VALIDSIG status without inspecting REVKEYSIG, EXPKEYSIG, or gpg exit codes. Attackers holding compromised-then-revoked signing keys or expired project keys can bypass signature verification to execute malicious plugins in the host process.","aliases":["GHSA-x38r-8wf3-q9hq","PYSEC-2026-3777"],"modified":"2026-09-03T03:48:16.888405484Z","published":"2026-08-27T14:51:04.070Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-347"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81700.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81700.json"},{"type":"ADVISORY","url":"https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-x38r-8wf3-q9hq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81700"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-gpg-signature-verification-bypass"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/jahlives/openssl_encrypt","events":[{"introduced":"0"},{"fixed":"39b0a010cae90520f74b7194f61fedd43af04ef8"}],"database_specific":{"cpe":"cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:python:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.4.9"}],"source":["AFFECTED_FIELD","CPE_RANGE"]}}],"versions":["v1.4.7","v1.4.6","v1.4.5","v1.4.4","v1.4.2","v1.4.1rc2","v1.4.1rc1","v1.4.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81700.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}