cve/2024/CVE-2024-53981.md

### [CVE-2024-53981](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-53981)
![](https://img.shields.io/static/v1?label=Product&message=python-multipart&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%200.0.18%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-770%3A%20Allocation%20of%20Resources%20Without%20Limits%20or%20Throttling&color=brightgreen)

### Description

python-multipart is a streaming multipart parser for Python. When parsing form data, python-multipart skips line breaks (CR \r or LF \n) in front of the first boundary and any tailing bytes after the last boundary. This happens one byte at a time and emits a log event each time, which may cause excessive logging for certain inputs. An attacker could abuse this by sending a malicious request with lots of data before the first or after the last boundary, causing high CPU load and stalling the processing thread for a significant amount of time. In case of ASGI application, this could stall the event loop and prevent other requests from being processed, resulting in a denial of service (DoS). This vulnerability is fixed in 0.0.18.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/Startr4ck/CVE_lists
- https://github.com/honorseclab/vulns