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.
- CVSS 3.1
- 7.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L - EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-26)
- CWEs
- CWE-304, CWE-325
- Published
- Modified
- Record from
- the NVD, synced
Affected
- apache:httpclient
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-v468-qcjx-r72w | Maven | org.apache.httpcomponents.client5:httpclient5 | >=5.6-alpha1 <5.6.1 | 5.6.1 |