CVE-2026-53540
LOW
INFO
Priority: 0.01
BB Relevance:
57/100
Published: 2026-06-22
Modified: 2026-10-25
First seen: 2026-10-29
Status: active
Attack Surface
Network
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
High
PR:
None
UI:
None
S:
Unchanged
C:
None
I:
None
A:
Low
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.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| fastapiexpert | python-multipart | < 0.0.31 |
References & Advisories (1)
Vendor Advisory