CVE-2026-53540
Last modified
CVE-2026-53540 is a low-severity vulnerability rated 3.7/10 on the CVSS scale. Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.31, parse_form() did not validate the Content-Length header before using it to bound its chunked read of the request body. EPSS estimates a 0.22% chance of exploitation in the next 30 days.
Description
Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.31, parse_form() did not validate the Content-Length header before using it to bound its chunked read of the request body. A negative Content-Length turned the bounded read into a read-until-EOF, so the entire body was loaded into memory in a single read instead of in fixed-size chunks. This vulnerability is fixed in 0.0.31.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fastapiexpert | Python-Multipart | < 0.0.31 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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