CVE-2026-24486
Python-Multipart has Arbitrary File Write via Non-Default Configuration
8.6
HIGH
CVSS 3.1
EPSS 1.0%
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.
How to fix CVE-2026-24486
To remediate CVE-2026-24486, upgrade the affected package to a fixed version below.
- —no fix listed
- —upgrade to 0.0.22 or later
Is CVE-2026-24486 being exploited?
Low — EPSS is 1.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0
- from 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 |