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Vulnerability · Published Apr 24, 2025 · Assigned by apache

CVE-2025-27820Apache HttpComponents: PSL (Public Suffix List) validation bypass

High 7.5

In plain English

A high-severity improper certificate validation in Apache HttpComponents from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.0%top 38.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Mavenorg.apache.httpcomponents.client5:httpclient55.4.3GHSA-73m2-qfq3-56cx
Ubuntu:22.04:LTShttpcomponents-clientno fix listedUBUNTU-CVE-2025-27820
Ubuntu:24.04:LTShttpcomponents-clientno fix listedUBUNTU-CVE-2025-27820
Ubuntu:25.10httpcomponents-clientno fix listedUBUNTU-CVE-2025-27820
Ubuntu:26.04:LTShttpcomponents-clientno fix listedUBUNTU-CVE-2025-27820
Ubuntu:26.10httpcomponents-clientno fix listedUBUNTU-CVE-2025-27820

Affected products (as reported)

VendorProductVersions
Apache Software Foundation Apache HttpComponents 5.4.0 – before 5.4.3

Weakness: CWE-295 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References