{"action":"Upgrade openssl-encrypt to 1.4.0 or later.","affected":[{"fixed":"1.4.0","introduced":"0"}],"component":"openssl-encrypt","cve_ids":["CVE-2026-74900"],"ecosystem":"PyPI","epss":0.00559,"exploited":false,"fixed_versions":["1.4.0"],"ghsa_id":"GHSA-p3gq-pcg9-qvfv","id":"tcs_01M5KH780095G5GY3SWDKRMDA3","modified_at":"2026-09-02T09:00:05.029715670Z","published_at":"2026-08-17T11:16:45.050Z","references":["https://osv.dev/vulnerability/PYSEC-2026-3772","https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-p3gq-pcg9-qvfv","https://www.vulncheck.com/advisories/openssl-encrypt-before-weak-shared-secret-via-pqc-simulation-mode"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"PYSEC-2026-3772","url":"https://osv.dev/vulnerability/PYSEC-2026-3772"}],"summary":"openssl_encrypt versions before 1.4.0 contain a critical vulnerability in pqc.py where KEM decapsulation failures silently fall back to simulation mode, generating a deterministic shared secret from o"}