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.

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20846-1 advisory.

    This update for python-python-multipart fixes the following issues

    - CVE-2026-40347: crafted `multipart/form-data` can cause a denial of service (bsc#1262403).
    - CVE-2026-42561: denial of service vulnerability in multipart part header parsing (bsc#1265250).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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.
    (CVE-2026-40347)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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.
    (CVE-2026-40347)

ID	Name	Product	Family	Type	Severity
318191	openSUSE 16 Security Update : python-python-multipart (openSUSE-SU-2026:20846-1)	Nessus	SuSE Local Security Checks	Local	high
307443	Linux Distros Unpatched Vulnerability : CVE-2026-40347	Nessus	Misc.	Local	medium
440444	SCA: security update for python-multipart (GHSA-mj87-hwqh-73pj)	Tenable Cloud Security	SCA Checks	Local	medium
440444	SCA: security update for python-multipart (GHSA-mj87-hwqh-73pj)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium

Detections

Analytics

CVE-2026-40347

medium

Tenable Plugins

high

medium

medium

medium