{"id":"CVE-2026-81703","aliases":["PYSEC-2026-3779","GHSA-qqfq-g2cv-j7v3"],"title":"openssl_encrypt versions before 1.4.9 fail to validate encryption status of embedded post-quantum private keys in file metadata. Attacker…","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 PQC keys that decrypt under any password, bypassing auth…","severity":"none","vendor":"openssl-encrypt","product":"openssl-encrypt","ecosystem":"pip","affected":["openssl-encrypt < 1.4.9"],"patched":["openssl-encrypt 1.4.9"],"published":"2026-08-27","updated":"2026-09-02","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/PYSEC-2026-3779","references":[{"url":"https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-qqfq-g2cv-j7v3"},{"url":"https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-authentication-bypass-via-unencrypted-pqc-key"}],"tags":["osv","pip"],"epss":0.00223,"epssPercentile":0.1159,"ingestedAt":"2026-09-02T19:31:26.197Z","slug":"CVE-2026-81703","body":"## Overview\n\nopenssl_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.\n\n## Affected packages\n\n- `openssl-encrypt < 1.4.9`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `openssl-encrypt 1.4.9`","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}