{"id":"CVE-2026-74870","aliases":["PYSEC-2026-3956","GHSA-p9g8-wvh4-2jmx"],"title":"openssl_encrypt (pip) versions <= 1.4.7 contain an information exposure vulnerability where the 'hsm fido2-test' and 'hsm onlykey-test' d…","summary":"openssl_encrypt (pip) versions <= 1.4.7 contain an information exposure vulnerability where the 'hsm fido2-test' and 'hsm onlykey-test' diagnostic commands unconditionally print the full derived hardware pepper as hex to stdout/stderr (c…","severity":"none","vendor":"openssl-encrypt","product":"openssl-encrypt","ecosystem":"pip","affected":["openssl-encrypt < 1.4.7"],"patched":["openssl-encrypt 1.4.7"],"published":"2026-08-17","updated":"2026-09-10","sourceUpdated":"2026-09-10T13:00:03.320612550Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/PYSEC-2026-3956","references":[{"url":"https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-p9g8-wvh4-2jmx"},{"url":"https://www.vulncheck.com/advisories/openssl-encrypt-before-hardware-pepper-information-disclosure"}],"tags":["osv","pip"],"epss":0.00188,"epssPercentile":0.08646,"ingestedAt":"2026-09-12T03:13:01.743Z","slug":"CVE-2026-74870","body":"## Overview\n\nopenssl_encrypt (pip) versions <= 1.4.7 contain an information exposure vulnerability where the 'hsm fido2-test' and 'hsm onlykey-test' diagnostic commands unconditionally print the full derived hardware pepper as hex to stdout/stderr (crypt_cli.py, handle_hsm_command). The printed value can persist in terminal scrollback, session recordings, or CI logs. Impact is limited because the pepper is derived from a random per-invocation test salt and is salt-bound, so the leaked value cannot be used to decrypt real files. A related plugin issue logged raw prf_data outside the secret-redaction path. Fixed in 1.4.8 (and 1.5.0) by removing the hex dumps and routing plugin debug output through the redaction layer.\n\n## Affected packages\n\n- `openssl-encrypt < 1.4.7`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `openssl-encrypt 1.4.7`","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}