CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2024-24762
High (7.5) in fastapiexpert python-multipart. EPSS 1.5% chance of exploitation in the next 30 days. Fixed in python-multipart 0.0.7.
`python-multipart` is a streaming multipart parser for Python. When using form data, `python-multipart` uses a Regular Expression to parse the HTTP `Content-Type` header, including options. An attacker could send a custom-made `Content-Type` option that is very difficult for the RegEx to process, consuming CPU resources and stalling indefinitely (minutes or more) while holding the main event loop. This means that process can't handle any more requests, leading to regular expression denial of service. This vulnerability has been patched in version 0.0.7.
Severity
- EPSS
- 1.5% chance of exploitation in the next 30 days; higher than 74% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-1333, CWE-400
- Published
- Modified
- Record from
- the NVD, synced
Affected
- fastapiexpert:python-multipart
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-2jv5-9r88-3w3p | PyPI | python-multipart | <0.0.7 | 0.0.7 |
| PYSEC-2024-38 | PyPI | fastapi | <0.109.1 | 0.109.1 |
| PYSEC-2026-1850 | PyPI | python-multipart | <0.0.7 | 0.0.7 |
References
- https://github.com/Kludex/python-multipart/commit/20f0ef6b4e4caf7d69a667c54dff57fe467109a4
- https://github.com/Kludex/python-multipart/security/advisories/GHSA-2jv5-9r88-3w3p
- https://github.com/andrew-d/python-multipart/blob/d3d16dae4b061c34fe9d3c9081d9800c49fc1f7a/multipart/multipart.py#L72-L74
- https://github.com/encode/starlette/commit/13e5c26a27f4903924624736abd6131b2da80cc5
- https://github.com/encode/starlette/security/advisories/GHSA-93gm-qmq6-w238