GitHub Advisoryadvisory · Maven
GHSA-4j3c-42xv-3f84 Apache Tomcat is vulnerable to resource exhaustion when using the APR/Native connector
MEDIUM
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
- https://nvd.nist.gov/vuln/detail/CVE-2025-52434 advisory
- https://github.com/apache/tomcat/commit/8a83c3c42d20762782678932c14005cd3397a018 web
- https://github.com/apache/tomcat package
- https://lists.apache.org/thread/gxgh65004f25y8519coth6w7vchww030 web
- https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html web
- http://www.openwall.com/lists/oss-security/2025/07/10/11 web