CVE-2026-24486
HIGH8.6EPSS 1.0%Python-Multipart has Arbitrary File Write via Non-Default Configuration
Published: 1/26/2026Modified: 4/28/2026
Description
Python-Multipart is a streaming multipart parser for Python. Prior to version 0.0.22, a Path Traversal vulnerability exists when using non-default configuration options `UPLOAD_DIR` and `UPLOAD_KEEP_FILENAME=True`. An attacker can write uploaded files to arbitrary locations on the filesystem by crafting a malicious filename. Users should upgrade to version 0.0.22 to receive a patch or, as a workaround, avoid using `UPLOAD_KEEP_FILENAME=True` in project configurations.
Affected packages (2)
- Debian/python-multipartfrom 0
- PyPI/python-multipartfrom 0, < 0.0.22
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L |
References (6)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-24486
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2026-24486
- PATCHhttps://github.com/Kludex/python-multipart
- WEBhttps://github.com/Kludex/python-multipart/commit/9433f4bbc9652bdde82bbe380984e32f8cfc89c4
- WEBhttps://github.com/Kludex/python-multipart/releases/tag/0.0.22
- WEBhttps://github.com/Kludex/python-multipart/security/advisories/GHSA-wp53-j4wj-2cfg