Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.27, python-multipart has a denial of service vulnerability in multipart part header parsing. When parsing multipart/form-data, MultipartParser previously had no limit on the number of part headers or the size of an individual part header. An attacker could send a request with either many repeated headers without terminating the header block or a single very large header value, causing excessive CPU work before request rejection or completion. This vulnerability is fixed in 0.0.27.

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. Prior to 0.0.27, python-multipart has a     denial of service vulnerability in multipart part header parsing. When parsing multipart/form-data,     MultipartParser previously had no limit on the number of part headers or the size of an individual part     header. An attacker could send a request with either many repeated headers without terminating the header     block or a single very large header value, causing excessive CPU work before request rejection or     completion. This vulnerability is fixed in 0.0.27. (CVE-2026-42561)

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. Prior to 0.0.27, python-multipart has a
    denial of service vulnerability in multipart part header parsing. When parsing multipart/form-data,
    MultipartParser previously had no limit on the number of part headers or the size of an individual part
    header. An attacker could send a request with either many repeated headers without terminating the header
    block or a single very large header value, causing excessive CPU work before request rejection or
    completion. This vulnerability is fixed in 0.0.27. (CVE-2026-42561)

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
314809	Linux Distros Unpatched Vulnerability : CVE-2026-42561	Nessus	Misc.	Local	high
441308	SCA: security update for python-multipart (GHSA-pp6c-gr5w-3c5g)	Tenable Cloud Security	SCA Checks	Local	high
441308	SCA: security update for python-multipart (GHSA-pp6c-gr5w-3c5g)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-42561

high

Tenable Plugins

high

high

high

high