Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.31, parse_form() did not validate the Content-Length header before using it to bound its chunked read of the request body. A negative Content-Length turned the bounded read into a read-until-EOF, so the entire body was loaded into memory in a single read instead of in fixed-size chunks. This vulnerability is fixed in 0.0.31.

The remote SUSE Linux SLES16 / SLES_SAP16 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:22372-1 advisory.

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

    - CVE-2026-53537: multipart/form-data with extended parameters can lead to file or parameter smuggling     (bsc#1268506).
    - CVE-2026-53538: urlencoded requests containing semicolons can lead to form field smuggling     (bsc#1268496).
    - CVE-2026-53539: small crafted body can cause a denial of service (bsc#1268500).
    - CVE-2026-53540: crafted request buffers can lead to degrading availability (bsc#1268488).

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 remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21066-1 advisory.

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

    - CVE-2026-53537: multipart/form-data with extended parameters can lead to file or parameter smuggling     (bsc#1268506).
    - CVE-2026-53538: urlencoded requests containing semicolons can lead to form field smuggling     (bsc#1268496).
    - CVE-2026-53539: small crafted body can cause a denial of service (bsc#1268500).
    - CVE-2026-53540: crafted request buffers can lead to degrading availability (bsc#1268488).

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 0.0.31, parse_form() did not     validate the Content-Length header before using it to bound its chunked read of the request body. A     negative Content-Length turned the bounded read into a read-until-EOF, so the entire body was loaded into     memory in a single read instead of in fixed-size chunks. This vulnerability is fixed in 0.0.31.
    (CVE-2026-53540)

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 0.0.31, parse_form() did not
    validate the Content-Length header before using it to bound its chunked read of the request body. A
    negative Content-Length turned the bounded read into a read-until-EOF, so the entire body was loaded into
    memory in a single read instead of in fixed-size chunks. This vulnerability is fixed in 0.0.31.
    (CVE-2026-53540)

ID	Name	Product	Family	Severity
324845	SUSE SLES16 Security Update : python-python-multipart (SUSE-SU-2026:22372-1)	Nessus	SuSE Local Security Checks	medium
324071	openSUSE 16 Security Update : python-python-multipart (openSUSE-SU-2026:21066-1)	Nessus	SuSE Local Security Checks	medium
322157	Linux Distros Unpatched Vulnerability : CVE-2026-53540	Nessus	Misc.	low
443223	SCA: security update for python-multipart (GHSA-v9pg-7xvm-68hf)	Tenable Cloud Security	SCA Checks	low
443223	SCA: security update for python-multipart (GHSA-v9pg-7xvm-68hf)	Tenable Self-Hosted Container Security	SCA Checks	low

Detections

Analytics

CVE-2026-53540

low

Tenable Plugins

medium

medium

low

low

low