CVE-2025-27820: Apache HttpComponents: PSL (Public Suffix List) validation bypass
High · CVSS 7.5 (CVSS 3.1)EPSS 0.97%, 61th percentilePublished Updated Assigner: apache
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
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
Apache Software Foundation: Apache HttpComponents
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- github.com/apache/httpcomponents-client/pull/574 (opens in new tab)
- github.com/apache/httpcomponents-client/pull/621 (opens in new tab)
- hc.apache.org/httpcomponents-client-5.4.x/index.html (opens in new tab)
- lists.apache.org/thread/55xhs40ncqv97qvoocok44995xp5kqn8 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)