CVE-2026-31958 Tornado has a DoS due to too many multipart parts

Tornado is a Python web framework and asynchronous networking library. In versions of Tornado prior to 6.5.5, the only limit on the number of parts in multipart/form-data is the maxbodysize setting default 100MB. Since parsing occurs synchronously on the main thread, this creates the possibility ...

FileUpload: FileUpload DoS with excessive parts

A flaw was found in Apache Commons FileUpload, where it does not limit the number of parts being processed in a request. This issue may allow an attacker to use a malicious upload or series of uploads to trigger a denial of service. While Red Hat Satellite relies upon Apache Tomcat, it does not...

python-werkzeug: high resource usage when parsing multipart form data with many fields

A flaw was found in python-werkzeug. Werkzeug is multipart form data parser, that will parse an unlimited number of parts, including file parts. These parts can be a small amount of bytes, but each requires CPU time to parse, and may use more memory as Python data. If a request can be made to an...

python-werkzeug: high resource usage when parsing multipart form data with many fields

A flaw was found in python-werkzeug. Werkzeug is multipart form data parser, that will parse an unlimited number of parts, including file parts. These parts can be a small amount of bytes, but each requires CPU time to parse, and may use more memory as Python data. If a request can be made to an...