CVE-2026-24486

HIGH

8.6

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.

CVE Details

CVSS v3.1 Score8.6

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/27/2026

Last Modified2/17/2026

Sourcenvd

Honeypot Sightings0

Affected Products

fastapiexpert:python-multipart

Weaknesses (CWE)

CWE-22

References

https://github.com/Kludex/python-multipart/commit/9433f4bbc9652bdde82bbe380984e32f8cfc89c4(security-advisories@github.com)

https://github.com/Kludex/python-multipart/releases/tag/0.0.22(security-advisories@github.com)

https://github.com/Kludex/python-multipart/security/advisories/GHSA-wp53-j4wj-2cfg(security-advisories@github.com)

IOC Correlations

No correlations recorded

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