CVE-2026-74889

脆弱性の種類

openssl_encrypt versions before 1.4.0 use HKDF with no salt and static info parameter in key normalization functions, reducing entropy extraction and determinism. Attackers can exploit predictable key derivation with identical inputs to weaken cryptographic security against multi-target attacks.

影響を受ける製品

• jahlives openssl_encrypt

参考情報

• https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-j9mh-57cc-665x
• https://www.vulncheck.com/advisories/openssl-encrypt-before-weak-key-derivation-via-hkdf