Apache Tomcat is vulnerable to resource exhaustion when using the APR/Native connector
GHSA-4j3c-42xv-3f84 · BIT-tomcat-2025-52434 · CVE-2025-52434
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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.
References
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2025-52434
- WEB https://github.com/apache/tomcat/commit/8a83c3c42d20762782678932c14005cd3397a018
- PACKAGE https://github.com/apache/tomcat
- WEB 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
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