CVE-2026-74871

Medium

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.

SeverityMedium

CVSS6.2

Exploit probability—

ProductJahlives Openssl Encrypt

PublishedAug 17, 2026

First seenAug 17, 2026

Weakness typeCWE-916CWE-916

How to fix

Update

jahlives openssl_encrypt1.4.6 or later
openssl-encrypt1.4.6 or later

Vendor advisories

github.com/jahlives/openssl_encrypt/security/advisories/GHSA-vxf9-vwp6-2w43

Affected products

Product	Affected versions	Fixed in
jahlives openssl_encrypt	v < 1.4.6	1.4.6
openssl-encryptPyPI	v < 1.4.6	1.4.6

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