CVE-2026-40347

MEDIUM

5.3

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.

Details CVE

Score CVSS v3.15.3

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie4/18/2026

Derniere modification4/18/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-400CWE-834

References

https://github.com/Kludex/python-multipart/releases/tag/0.0.26(security-advisories@github.com)

https://github.com/Kludex/python-multipart/security/advisories/GHSA-mj87-hwqh-73pj(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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