Intel/AIKIDO-2026-10647
httpclient5
AIKIDO-2026-10647
httpclient5 is vulnerable to Missing Critical Step in Authentication
Missing Critical Step in AuthenticationCVE-2026-40542 Published Apr 29, 2026
75
High Risk
This Affects:
httpclient55.6 - 5.6
Fixed in 5.6.1Are you affected? Scan for Free
TL;DR
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.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
httpclient5 is vulnerable to Missing Critical Step in Authentication in versions 5.6 - 5.6.
How to fix this
Upgrade the org.apache.httpcomponents.client5:httpclient5 library to a patch version.
Links
github.com/apache/httpcomponents-client/compare/rel/v5.6...rel/v5.6.1https://github.com/apache/httpcomponents-client/compare/rel/v5.6...rel/v5.6.1
lists.apache.org/thread/tfmgv86xr0z1y096vs3z0y315t1v3o97https://lists.apache.org/thread/tfmgv86xr0z1y096vs3z0y315t1v3o97
openwall.com/lists/oss-security/2026/04/22/5http://www.openwall.com/lists/oss-security/2026/04/22/5
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