CVE detail
CVE-2026-40542
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.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 17.9 · diversity 14.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
5 source links · newest first
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40542.jsonsecurity.access.redhat.com
No excerpt available.
Vendor Advisorysecurity.access.redhat.comApr 22, 2026, 8:16 AM - https://bugzilla.redhat.com/show_bug.cgi?id=2460518bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comApr 22, 2026, 8:16 AM - https://access.redhat.com/security/cve/CVE-2026-40542access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comApr 22, 2026, 8:16 AM - http://www.openwall.com/lists/oss-security/2026/04/22/5www.openwall.com
No excerpt available.
Exploitwww.openwall.comApr 22, 2026, 8:16 AM - https://lists.apache.org/thread/tfmgv86xr0z1y096vs3z0y315t1v3o97lists.apache.org
No excerpt available.
Vendor Advisorylists.apache.orgApr 22, 2026, 8:16 AM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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