CVE-2026-74871
MEDIUM
NVD
CVSS Score
6.2
Severity
MEDIUM
Published
Aug 17, 2026
Vendor
unknown
Description
openssl_encrypt versions before 1.4.6 contain a key derivation flaw in sequential XOR composition mode where the last stage cancels out during key generation. When configured with a single KDF and no prior hashing stage, attackers can bypass memory-hard key derivation and perform offline password cracking at SHA-256 speed instead of the configured KDF cost.