Description

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 max_body_size setting (default 100MB). Since parsing occurs synchronously on the main thread, this creates the possibility of denial-of-service due to the cost of parsing very large multipart bodies with many parts. This vulnerability is fixed in 6.5.5.

INFO

Published Date :

2026-03-11T19:27:23.380Z

Last Modified :

2026-04-01T14:32:33.146Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-31958 vulnerability.

Vendors Products
Tornadoweb
  • Tornado
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-31958.

URL Resource
https://github.com/tornadoweb/tornado/security/advisories/GHSA-qjxf-f2mg-c6mc cve-icon cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2026/04/msg00000.html cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-31958 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-31958 cve-icon
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