CVE-2026-24486
Prior to version 0.0.22, a Path Traversal vulnerability exists when using non-default configuration options `UPLOAD_DIR` and `UPLOAD_KEEP_FILENAME=True`.
Does this matter?
A public exploit is published in Exploit-DB and the impact is high, while EPSS rates exploitation at 2.2%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 2.21% probability · 82th percentile
- Public exploits
- 1 in Exploit-DB · first 30 April 2026
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- fastapiexpert/python-multipart
- Source
- security-advisories@github.com
EPSS 2.2% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- https://github.com/Kludex/python-multipart/commit/9433f4bbc9652bdde82bbe380984e32f8cfc89c4Patch
- https://github.com/Kludex/python-multipart/releases/tag/0.0.22Product, Release Notes
- https://github.com/Kludex/python-multipart/security/advisories/GHSA-wp53-j4wj-2cfgExploit, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:10184
- https://access.redhat.com/errata/RHSA-2026:1504
- https://access.redhat.com/errata/RHSA-2026:19712
- https://access.redhat.com/errata/RHSA-2026:3461
- https://access.redhat.com/errata/RHSA-2026:3462
- https://access.redhat.com/errata/RHSA-2026:3713
- https://access.redhat.com/errata/RHSA-2026:3782
- https://access.redhat.com/errata/RHSA-2026:3960
- https://access.redhat.com/errata/RHSA-2026:42644
- https://access.redhat.com/errata/RHSA-2026:44696
- https://access.redhat.com/errata/RHSA-2026:51357
- https://access.redhat.com/security/cve/CVE-2026-24486
- https://bugzilla.redhat.com/show_bug.cgi?id=2433132
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24486.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.