CVE-2024-53981

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.

How to fix CVE-2024-53981

To remediate CVE-2024-53981, upgrade the affected package to a fixed version below.

• —no fix listed
• —upgrade to 0.0.18 or later

Is CVE-2024-53981 being exploited?

Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0
• from 0, < 0.0.18

CVSS scores

References (5)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2024-53981
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2024-53981
• PATCHgithub.com/Kludex/python-multipart
• WEBgithub.com/Kludex/python-multipart/commit/c4fe4d3cebc08c660e57dd709af1ffa7059b3177