The parseoptionsheader() function in multipart.py uses a regular expression with an ambiguous alternation, which can cause exponential backtracking (ReDoS)…
CyberXYZ does not call a package safe in absolute terms. It records 1 known vulnerability for multipart (pypi), the worst rated HIGH, and no malicious-package signal. Whether it is acceptable depends on the version you run.
Does multipart have known vulnerabilities?
Yes. CyberXYZ records 1 known vulnerability for multipart (pypi), the worst rated HIGH. They are GHSA-p2m9-wcp5-6qw3.
Which version of multipart should I use?
1.3.1 or later clears every advisory recorded for multipart (pypi). Check the release you pick before installing it.
How do I check multipart before installing?
Search multipart in CyberXYZ Check at https://cyberxyz.io/check?q=multipart. The xyz Scanner checks a project's dependencies, and CyberXYZ Proxy checks each package as it is installed.
Checked 2026-11-14 at 13:02 UTC. The most recent advisory here was published 2026-03-12. Updated continuously from NVD, GHSA, OSV and CNA feeds.