VYPR
Medium severity5.3NVD Advisory· Published Apr 18, 2026· Updated Apr 24, 2026

CVE-2026-40347

CVE-2026-40347

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.

AI Insight

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
python-multipartPyPI
< 0.0.260.0.26

Affected products

22

Patches

Vulnerability mechanics

References

4

News mentions

0

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