CVE-2026-81689

High

Description

openssl_encrypt versions before 1.4.9 derive the remote-pepper wrap key using unsalted HKDF-SHA256 or bare SHA-256 of the password, allowing identical keys across all users and files. Attackers with access to wrapped pepper blobs can precompute a single dictionary table and perform fleet-wide offline password guessing at hardware speed to recover user passwords.

SeverityHigh

CVSS7.5

Exploit probability—

ProductJahlives Openssl Encrypt

PublishedAug 27, 2026

First seenAug 27, 2026

Weakness typeCWE-916CWE-916

How to fix

Update

jahlives openssl_encrypt1.4.9 or later
openssl-encrypt1.4.9 or later

Vendor advisories

github.com/jahlives/openssl_encrypt/security/advisories/GHSA-3v63-778v-3mvp

Affected products

Product	Affected versions	Fixed in
jahlives openssl_encrypt	v < 1.4.9	1.4.9
openssl-encryptPyPI	v < 1.4.9	1.4.9

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