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CVE-2026-40542

7.3 high SSVC exploitation: none Modified
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.3 · apacheNVD modified 2026-10-26 21:10

Affected (CPE criteria) 1

  • cpe:2.3:a:apache:httpclient:5.6:-:*:*:*:*:*:*

References 16