CVE-2024-24762
python-multipart vulnerable to content-type header Regular expression Denial of Service
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.
Timeline
ID reserved
By GitHub_M
- 7 days later
· 7 days later
Published
- 15 months later
· 15 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.5% · top 25% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIpython-multipartGHSA-2jv5-9r88-3w3p (opens in a new tab)
References (8)
- https://github.com/Kludex/python-multipart/security/advisories/GHSA-2jv5-9r88-3w3p (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/Kludex/python-multipart/commit/20f0ef6b4e4caf7d69a667c54dff57fe467109a4 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/tiangolo/fastapi/security/advisories/GHSA-qf9m-vfgh-m389 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/encode/starlette/security/advisories/GHSA-93gm-qmq6-w238 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/andrew-d/python-multipart/blob/d3d16dae4b061c34fe9d3c9081d9800c49fc1f7a/multipart/multipart.py#L72-L74 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/encode/starlette/commit/13e5c26a27f4903924624736abd6131b2da80cc5 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/tiangolo/fastapi/commit/9d34ad0ee8a0dfbbcce06f76c2d5d851085024fc (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/tiangolo/fastapi/releases/tag/0.109.1 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-2jv5-9r88-3w3p (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2024-24762)Record last updated .