CVE-2026-24486
Python-Multipart has Arbitrary File Write via Non-Default Configuration
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.
INFO
Published Date :
Jan. 27, 2026, 1:16 a.m.
Last Modified :
Feb. 17, 2026, 8:44 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Upgrade Python-Multipart to version 0.0.22.
- Disable UPLOAD_KEEP_FILENAME if not using default configuration.
Public PoC/Exploit Available at Github
CVE-2026-24486 has a 5 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-24486.
| URL | Resource |
|---|---|
| https://github.com/Kludex/python-multipart/commit/9433f4bbc9652bdde82bbe380984e32f8cfc89c4 | Patch |
| https://github.com/Kludex/python-multipart/releases/tag/0.0.22 | Product Release Notes |
| https://github.com/Kludex/python-multipart/security/advisories/GHSA-wp53-j4wj-2cfg | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-24486 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-24486
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-24486 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-24486 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Added CPE Configuration OR *cpe:2.3:a:fastapiexpert:python-multipart:*:*:*:*:*:python:*:* versions up to (excluding) 0.0.22 Added Reference Type GitHub, Inc.: https://github.com/Kludex/python-multipart/commit/9433f4bbc9652bdde82bbe380984e32f8cfc89c4 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/Kludex/python-multipart/releases/tag/0.0.22 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/Kludex/python-multipart/security/advisories/GHSA-wp53-j4wj-2cfg Types: Exploit, Vendor Advisory -
New CVE Received by [email protected]
Jan. 27, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L Added CWE CWE-22 Added Reference https://github.com/Kludex/python-multipart/commit/9433f4bbc9652bdde82bbe380984e32f8cfc89c4 Added Reference https://github.com/Kludex/python-multipart/releases/tag/0.0.22 Added Reference https://github.com/Kludex/python-multipart/security/advisories/GHSA-wp53-j4wj-2cfg