CVE-2026-71290
Apache HttpComponents Client: TLS hostname verification silently disabled on the async transport (default config, MITM)
CVSS Score
9.1
EPSS Score
0.2%
EPSS Percentile
16th
Improper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer. HostnameVerificationPolicy#BUILTIN setting has no effect when used with the async version of HttpClient. An attacker that can intercept and modify traffic between the client and the server can impersonate the server by presenting a valid certificate for a different domain. Please note the classic version of HttpClient is not affected by this vulnerability. Affected users are recommended to upgrade to at least version 5.6.4, which fixes the issue.
| CWE | CWE-295 |
| Vendor | apache software foundation |
| Product | apache httpcomponents client |
| Published | Aug 11, 2026 |
| Last Updated | Sep 24, 2026 |
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Affected Versions
Apache Software Foundation / Apache HttpComponents Client
5.4-alpha ≤ 5.6.3
References
Credits
n0mi1k