CVE-2026-81689
HIGH
NVD
CVSS Score
7.5
Severity
HIGH
Published
Aug 27, 2026
Vendor
unknown
Description
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.