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CVE-2026-74889 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-j9mh-57cc-665x	[email protected]	MitigationVendor Advisory
https://www.vulncheck.com/advisories/openssl-encrypt-before-weak-key-derivation-via-hkdf	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-326	Inadequate Encryption Strength	[email protected]

Affected Products

Product	Versions
jahlives openssl encrypt	< 1.4.0
CPE cpe:2.3:a:jahlives:openssl_encrypt::::::python::* Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Sep 1, 2026	Initial Analysis	[email protected]
Aug 17, 2026	CVE Modified	CISA-ADP
Aug 17, 2026	New CVE Received	[email protected]