apache/tomcat · Security
Apache Tomcat is vulnerable to resource exhaustion when using the APR/Native connector
- GHSA ID
- GHSA-4j3c-42xv-3f84
- CVE ID
- CVE-2025-52434
- Severity
- medium
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS v3
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS v4
- 6.3 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U
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.
CWEs
- CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
References
- https://nvd.nist.gov/vuln/detail/CVE-2025-52434 ↗
- https://lists.apache.org/thread/gxgh65004f25y8519coth6w7vchww030 ↗
- https://github.com/apache/tomcat/commit/8a83c3c42d20762782678932c14005cd3397a018 ↗
- https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html ↗
- http://www.openwall.com/lists/oss-security/2025/07/10/11 ↗
- https://github.com/advisories/GHSA-4j3c-42xv-3f84 ↗