high7.5
CVE-2025-52520
Apache Tomcat Catalina is vulnerable to DoS attack through bypassing of size limits
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.apache.tomcat:tomcat-catalina | >= 11.0.0-M1, < 11.0.9 | 11.0.9 |
| maven | org.apache.tomcat.embed:tomcat-embed-core | >= 11.0.0-M1, < 11.0.9 | 11.0.9 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Apache | Tomcat | from 9.0.0 before 9.0.107 from 10.1.0 before 10.1.43 from 11.0.0 before 11.0.9 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://lists.apache.org/thread/trqq01bbxw6c92zx69kx2mw2qgmfy0o5
- http://www.openwall.com/lists/oss-security/2025/07/10/12
- https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html
- https://github.com/advisories/GHSA-wr62-c79q-cv37
- https://nvd.nist.gov/vuln/detail/CVE-2025-52520
- https://github.com/apache/tomcat/commit/927d66fbc294cb65242102b817a45fd80834e040
- https://github.com/apache/tomcat/commit/a51e4bedccfafd35b7cdd0ee3e22267dee9f90db
- https://github.com/apache/tomcat/commit/fc42bbccb9041fafd194fbfdf3eab1d44cb5c45c