CVE-2026-81688: Jahlives OpenSSL Encrypt

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

openssl_encrypt versions before 1.4.9 store an unkeyed SHA-256 hash of the plaintext in the cleartext file header metadata. Attackers can read this hash without the password to confirm guessed plaintexts offline or fingerprint identical plaintexts across separately-encrypted files.

Affected products

• Jahlives OpenSSL Encrypt: before 1.4.9 (fixed in 1.4.9)

Published 2026-08-27. Last modified 2026-09-02.