{"id":"CVE-2026-81703","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-81703","summary":"openssl_encrypt versions before 1.4.9 fail to validate encryption status of embedded post-quantum private keys in file metadata. Attackers can craft files with unencrypted embedded…","details":"openssl_encrypt versions before 1.4.9 fail to validate encryption status of embedded post-quantum private keys in file metadata. Attackers can craft files with unencrypted embedded PQC keys that decrypt under any password, bypassing authentication and producing attacker-chosen plaintext with false integrity verification.","published":"2026-08-27T17:21:00.833","modified":"2026-08-27T17:21:00.833","cvss":{"score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-qqfq-g2cv-j7v3"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-authentication-bypass-via-unencrypted-pqc-key"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T17:21:00.833"}}