Apache · Apache Tomcat · CVE-2023-42794
**Name of the Vulnerable Software and Affected Versions**
Apache Tomcat versions 8.5.85 through 8.5.93
Apache Tomcat versions 9.0.70 through 9.0.80
**Description**
The internal fork of Commons FileUpload packaged with Apache Tomcat included an unreleased, in progress refactoring that exposed a potential denial of service on Windows if a web application opened a stream for an uploaded file but failed to close the stream. The file would never be deleted from disk, creating the possibility of an eventual denial of service due to the disk being full.
**Recommendations**
For Apache Tomcat versions 8.5.85 through 8.5.93, upgrade to version 8.5.94 onwards.
For Apache Tomcat versions 9.0.70 through 9.0.80, upgrade to version 9.0.81 onwards.