CVE-2026-81689
HighCVSS 7.5Summary
openssl_encrypt before 1.4.9 derives the remote-pepper wrap key using unsalted HKDF-SHA256 or bare SHA-256 of the password, allowing identical keys across all users and files. Attackers with access to wrapped pepper blobs can precompute a single dictionary table and perform fleet-wide offline password guessing at hardware speed to recover user passwords.
Risk Assessment
The organization is exposed to mass password cracking, potentially leading to data confidentiality breach.
Recommendation
Upgrade openssl_encrypt to 1.4.9 or later, which uses salted key derivation.
Original NVD description (English source)
openssl_encrypt versions before 1.4.9 derive the remote-pepper wrap key using unsalted HKDF-SHA256 or bare SHA-256 of the password, allowing identical keys across all users and files. Attackers with access to wrapped pepper blobs can precompute a single dictionary table and perform fleet-wide offline password guessing at hardware speed to recover user passwords.