CVE WatchAug 11, 2026

CVE-2026-71290

Improper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer. HostnameVerificationPolicy#BUILTIN setting ha

CVSS

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No CVSS

EPSS

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KEV

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Exploit Today

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0-100

Published: Aug 11, 2026 · Last modified: Aug 11, 2026 · CWE-295

EPSS · 30d

Not enough EPSS history yet.

Technical description

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.

Official references

lists.apache.orghttps://lists.apache.org/thread/bhf7g2zwpom2ohvwjjjlonc93br2s8vq

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