What’s Vulnerable › Vulnerabilities

CVE-2026-74870: openssl_encrypt before 1.4.8 Hardware Pepper Information Disclosure

• Severity: low (CVSS 3.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-17 · updated 2026-09-03
• Weakness: CWE-532

Description

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 (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.

Affected products

• jahlives openssl_encrypt: before 1.4.7 — fixed in 1.4.7

How to fix

Upgrade to a fixed version: jahlives openssl_encrypt 1.4.7. Check the vendor advisory for mitigations.

References

• https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-p9g8-wvh4-2jmx
• https://www.vulncheck.com/advisories/openssl-encrypt-before-hardware-pepper-information-disclosure

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