CVE-2025-27820 - CVE House
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Status published Unknown CVE-2025-27820

Apache HttpComponents: PSL (Public Suffix List) validation bypass

Vulnerability 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

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Joe Gallo

References

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Affected Vendor

Apache Software Foundation

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Affected Software

Apache HttpComponents
Vulnerable Versions:
5.4.0

Timeline

Official Publish: April 24th, 2025
Last Modified: June 4th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.