CVE-2026-40542

HighCVSS 7.3/10Last modified Sep 9, 2026

Description

Missing critical step in authentication in Apache HttpClient 5.6 allows an attacker to cause the client to accept SCRAM-SHA-256 authentication without proper mutual authentication verification. Users are recommended to upgrade to version 5.6.1, which fixes this issue.

Metrics

CVSS 3.1 7.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Weakness enumeration

CWE-304CWE-325

Affected software

No affected versions have been published.

Timeline

Published
Apr 22, 2026
Last modified
Sep 9, 2026
NVD status
Modified

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CVE-2026-40542: High severity, CVSS 7.3 | Vulnix