5.3
Medium
CVE-2026-40347 Python-Multipart is a streaming multipart parser for Python
Description
Python-Multipart is a streaming multipart parser for Python. Versions prior to 0.0.26 have a denial of service vulnerability when parsing crafted `multipart/form-data` requests with large preamble or epilogue sections. Upgrade to version 0.0.26 or later, which skips ahead to the next boundary candidate when processing leading CR/LF data and immediately discards epilogue data after the closing boundary.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| python-multipart 0.0 | earliest → < 0.0.26 | 0.0.26 |
References
- github.com github.com
- github.com github.com
Timeline
- Published
- Last modified
Other CVEs of python-multipart
The 9 CVEs of python-multipart →
CVE-2026-53540
Python-Multipart is a streaming multipart parser for Python
3.7
Low
CVE-2026-53537
Python-Multipart is a streaming multipart parser for Python
3.7
Low
CVE-2026-53538
Python-Multipart is a streaming multipart parser for Python
3.7
Low
CVE-2026-53539
Python-Multipart is a streaming multipart parser for Python
7.5
High