HIGH 8.7 NVD
CVE-2026-74888
openssl_encrypt versions before 1.4.0 use a non-standard PBKDF2 key derivation construction with iterations=1 per call in an outer loop, creating a KDF whose se
openssl_encrypt versions before 1.4.0 use a non-standard PBKDF2 key derivation construction with iterations=1 per call in an outer loop, creating a KDF whose security properties have not been formally analyzed. Attackers can exploit this weakened key derivation to more efficiently crack passwords protecting legacy encrypted files compared to standard PBKDF2 implementations.
References
- https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-743f-89fg-x288
- https://www.vulncheck.com/advisories/openssl-encrypt-before-non-standard-pbkdf2-key-deriva
This high severity vulnerability with a CVSS score of 8.7 was published on 2026-08-17 via NVD.
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