CVE-2024-24762

HIGH
Published Feb 5, 2024 Modified May 5, 2025 CWE-400 CWE-1333

Description

`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.

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CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption
CWE-1333 CWE-1333

Affected Products

Vendor Product
fastapiexpert python-multipart
fastapiexpert python-multipart
encode starlette
tiangolo fastapi

References

Frequently Asked Questions

What is CVE-2024-24762? +
`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. It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2024-24762? +
CVE-2024-24762 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2024-24762? +
CVE-2024-24762 affects products from encode, fastapiexpert, tiangolo, specifically: fastapi, python-multipart, starlette. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-24762? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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