CVE-2026-40542
Apache HttpClient: SCRAM-SHA-256 mutual authentication bypass may cause the client to accept authentication without proper mutual authentication verification
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-304 |
| Vendor | apache software foundation |
| Product | apache httpclient |
| Published | Apr 22, 2026 |
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Affected Versions
Apache Software Foundation / Apache HttpClient
5.6 < 5.6.1
References
Credits
Rasmus Moorats