Bug 2460518 (CVE-2026-40542) - CVE-2026-40542 httpclient: Apache HttpClient: Authentication bypass due to missing mutual authentication verification
Summary: CVE-2026-40542 httpclient: Apache HttpClient: Authentication bypass due to mi...
Keywords:
Status: NEW
Alias: CVE-2026-40542
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-22 08:01 UTC by OSIDB Bzimport
Modified: 2026-05-10 08:28 UTC (History)
136 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-04-22 08:01:20 UTC 
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.
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