GitHub Advisoryadvisory · Maven

GHSA-4j3c-42xv-3f84 Apache Tomcat is vulnerable to resource exhaustion when using the APR/Native connector

MEDIUM Published 2025-07-10 Modified 2026-07-01 Official page ↗
Aliases
CVE-2025-52434
Ecosystem
Maven
Packages
org.apache.tomcat:tomcat-coyote, org.apache.tomcat.embed:tomcat-embed-core
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-362
Reviewed
2025-07-10

Affected packages

• Maven org.apache.tomcat:tomcat-coyote: >= 9.0.0.M1, < 9.0.107 → fixed in 9.0.107 • Maven org.apache.tomcat:tomcat-coyote: >= 8.5.0, <= 8.5.100 (no fix yet) • Maven org.apache.tomcat.embed:tomcat-embed-core: >= 9.0.0.M1, < 9.0.107 → fixed in 9.0.107 • Maven org.apache.tomcat.embed:tomcat-embed-core: >= 8.5.0, <= 8.5.100 (no fix yet)

Description

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat when using the APR/Native connector. This was particularly noticeable with client initiated closes of HTTP/2 connections. This issue affects Apache Tomcat: from 9.0.0.M1 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 9.0.107, which fixes the issue.

Related

Alias · CVE (1)

  • CVE-2025-52434 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat when using the… vulnerability

Weakness · CWE (1)

  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness

References