{"action":"Upgrade openssl-encrypt to 1.4.0 or later.","affected":[{"fixed":"1.4.0","introduced":"0"}],"component":"openssl-encrypt","cve_ids":["CVE-2026-74901"],"ecosystem":"PyPI","epss":0.00405,"exploited":false,"fixed_versions":["1.4.0"],"ghsa_id":"GHSA-w4j7-wfgw-r52w","id":"tcs_01M5KH786AXAWS5XFP6M3FXJ2F","modified_at":"2026-09-02T09:00:04.182657535Z","published_at":"2026-08-17T11:16:45.183Z","references":["https://osv.dev/vulnerability/PYSEC-2026-3773","https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-w4j7-wfgw-r52w","https://www.vulncheck.com/advisories/openssl-encrypt-before-authentication-bypass-via-aes-ctr-fallback"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"PYSEC-2026-3773","url":"https://osv.dev/vulnerability/PYSEC-2026-3773"}],"summary":"openssl_encrypt versions before 1.4.0 contain an authentication bypass vulnerability in pqc.py where AES-GCM decryption failures trigger fallback to unauthenticated AES-CTR mode. Attackers can modify"}