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HIGH

CVE-2024-24762

CVSS v3

7.5

HIGH

EPSS Score

1.5 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • fastapiPyPIall versions · fixed in 0.109.1
  • python-multipartPyPIall versions · fixed in 0.0.7
  • starlettePyPIall versions · fixed in 0.36.2

Vendor advisories

  • CVE-2024-24762 Red Hat Product Security

    python-fastapi: regular expression denial of service vulnerability

Full record on NVD

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.

Technical details

Published
2024-02-05

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.

Is CVE-2024-24762 actively exploited?

Active exploitation of CVE-2024-24762 has not been confirmed. Its EPSS score was 1.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-24762?

CVE-2024-24762 has a CVSS v3 base score of 7.5 (HIGH severity).

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