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.
CVE-2024-24762
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 3.3%, top 13% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 71.7%
- KEV
- Not listed
Published
February 5, 2024
Last Modified
May 5, 2025
References (16)
- security-advisories@githubhttps://github.com/Kludex/python-multipart/commit/20f0ef6b4e4caf7d69a667c54dff57fe467109a4
- security-advisories@githubhttps://github.com/Kludex/python-multipart/security/advisories/GHSA-2jv5-9r88-3w3p
- security-advisories@githubhttps://github.com/andrew-d/python-multipart/blob/d3d16dae4b061c34fe9d3c9081d9800c49fc1f7a/multipart/multipart.py#L72-L74
- security-advisories@githubhttps://github.com/encode/starlette/commit/13e5c26a27f4903924624736abd6131b2da80cc5
- security-advisories@githubhttps://github.com/encode/starlette/security/advisories/GHSA-93gm-qmq6-w238
- security-advisories@githubhttps://github.com/tiangolo/fastapi/commit/9d34ad0ee8a0dfbbcce06f76c2d5d851085024fc
- security-advisories@githubhttps://github.com/tiangolo/fastapi/releases/tag/0.109.1
- security-advisories@githubhttps://github.com/tiangolo/fastapi/security/advisories/GHSA-qf9m-vfgh-m389
- af854a3a-2127-422b-91ae-364da2661108https://github.com/Kludex/python-multipart/commit/20f0ef6b4e4caf7d69a667c54dff57fe467109a4
- af854a3a-2127-422b-91ae-364da2661108https://github.com/Kludex/python-multipart/security/advisories/GHSA-2jv5-9r88-3w3p
- af854a3a-2127-422b-91ae-364da2661108https://github.com/andrew-d/python-multipart/blob/d3d16dae4b061c34fe9d3c9081d9800c49fc1f7a/multipart/multipart.py#L72-L74
- af854a3a-2127-422b-91ae-364da2661108https://github.com/encode/starlette/commit/13e5c26a27f4903924624736abd6131b2da80cc5
- af854a3a-2127-422b-91ae-364da2661108https://github.com/encode/starlette/security/advisories/GHSA-93gm-qmq6-w238
- af854a3a-2127-422b-91ae-364da2661108https://github.com/tiangolo/fastapi/commit/9d34ad0ee8a0dfbbcce06f76c2d5d851085024fc
- af854a3a-2127-422b-91ae-364da2661108https://github.com/tiangolo/fastapi/releases/tag/0.109.1
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | python3-multipart (0.0.9-1ubuntu0.1~esm1) @ noble | 2026-05-24 | ubuntu |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(2 across 1 ecosystem)
PyPI(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| fastapi | 0.1.0 ... 0.99.1 (188 versions) | 0.109.1 | — |
| python-multipart | 0.0.1 ... 0.0.6 (6 versions) | 0.0.7 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(1)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 10× in last 7d / 44× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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- 2026-05-24 09:09 UTCEG score recompute
- 2026-05-24 09:09 UTCVendor advisory
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Frequently asked(5)
What is CVE-2024-24762?
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