GHSA-v468-qcjx-r72w
Apache HttpClient accepts SCRAM-SHA-256 authentication without proper mutual authentication verification
At a glance
- Published
- Updated
- CVE
- CVE-2026-40542
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Description
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.
Affected packages
| Package | Versions |
|---|---|
| Maven · org.apache.httpcomponents.client5:httpclient5 | introduced 5.6-alpha1, fixed 5.6.1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-40542 ADVISORY
- https://github.com/apache/httpcomponents-client/commit/726eac2323d370435d8afca1e0540aa099927f18 WEB
- https://github.com/apache/httpcomponents-client PACKAGE
- https://lists.apache.org/thread/tfmgv86xr0z1y096vs3z0y315t1v3o97 WEB
- http://www.openwall.com/lists/oss-security/2026/04/22/5 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |