CVE-2025-27820 – Apache HttpClient Domain Check Bypass Vulnerability

The following table lists the changes that have been made to the
CVE-2025-27820 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Apr. 24, 2025

    Action Type Old Value New Value
    Added Description A bug in PSL validation logic in Apache HttpClient 5.4.x disables domain checks, affecting cookie management and host name verification. Discovered by the Apache HttpClient team. Fixed in the 5.4.3 release
    Added Reference https://github.com/apache/httpcomponents-client/pull/574
    Added Reference https://github.com/apache/httpcomponents-client/pull/621
    Added Reference https://hc.apache.org/httpcomponents-client-5.4.x/index.html
    Added Reference https://lists.apache.org/thread/55xhs40ncqv97qvoocok44995xp5kqn8
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