CVE-2026-74888

High

Description

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.

SeverityHigh

CVSS7.5

Exploit probability—

ProductJahlives Openssl Encrypt

PublishedAug 17, 2026

First seenAug 17, 2026

Weakness typeCWE-327CWE-327

How to fix

Update

jahlives openssl_encrypt1.4.0 or later
openssl-encrypt1.4.0 or later

Vendor advisories

github.com/jahlives/openssl_encrypt/security/advisories/GHSA-743f-89fg-x288

Affected products

Product	Affected versions	Fixed in
jahlives openssl_encrypt	v < 1.4.0	1.4.0
openssl-encryptPyPI	v < 1.4.0	1.4.0

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