CVE-2025-52520: Apache Tomcat Catalina is vulnerable to DoS attack through bypassing of size limits
(updated )
For some unlikely configurations of multipart upload, an Integer Overflow vulnerability in Apache Tomcat could lead to a DoS via bypassing of size limits.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.8, from 10.1.0-M1 through 10.1.42, 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 11.0.9, 10.1.43 or 9.0.107, which fix the issue.
References
- github.com/advisories/GHSA-wr62-c79q-cv37
- github.com/apache/tomcat
- github.com/apache/tomcat/commit/927d66fbc294cb65242102b817a45fd80834e040
- github.com/apache/tomcat/commit/a51e4bedccfafd35b7cdd0ee3e22267dee9f90db
- github.com/apache/tomcat/commit/fc42bbccb9041fafd194fbfdf3eab1d44cb5c45c
- lists.apache.org/thread/trqq01bbxw6c92zx69kx2mw2qgmfy0o5
- lists.debian.org/debian-lts-announce/2025/07/msg00009.html
- nvd.nist.gov/vuln/detail/CVE-2025-52520
Code Behaviors & Features
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