CVE-2026-53540
LOW EPSS 12.1%
Published Jun 22, 20261w ago · Modified Jun 23, 20261w ago
3.7 CVSS 3.1
Published Jun 22, 2026 1w ago
Last Modified Jun 23, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability Low
Threat Intelligence
EPSS Exploit Probability
12.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-1284
References 1
- github.com https://github.com/Kludex/python-multipart/security/advisories/GHSA-v9pg-7xvm-68hf
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.