Vulnerability Intelligence Report
Python-Multipart has Arbitrary File Write via Non-Default Configuration
CVE-2026-24486
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.
Path Traversal
No Active Exploit Signals
CVSS Base Score
8.6
HIGH
Exploitability:3.9
Impact Score:4.8
EPSS Probability:2.21%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-22 ↗CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Kludex | python-multipart | < 0.0.22 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | GitHub, Inc. · Vendor · USA |
| Reserved | 2026-01-23T00:38:20 |
| Published | 2026-01-27T00:34:06 |
| Last Updated | 2026-09-16T12:04:19 |
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