Detections
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SCA: security update for python-multipart (GHSA-vffw-93wf-4j4q)

medium Tenable Self-Hosted Container Security Plugin ID 443225

Description

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 0.0.30, parse_options_header parsed
 Content-Disposition (and Content-Type) headers with email.message.Message, which transparently applies RFC
 2231/5987 decoding. The extended parameter syntax (filename*=charset'lang'value, name*=..., and the
 filename*0/filename*1 continuation form) is decoded and surfaced under the bare filename/name key, and
 overrides the plain parameter when both are present. RFC 7578 §4.2 explicitly forbids the filename* form
 in multipart/form-data. Components that follow RFC 7578, or that do not implement RFC 2231/5987 decoding
 for multipart/form-data (WAFs, proxies, gateways), may interpret such a header differently. An attacker
 can exploit that difference to smuggle a different field name or filename past an upstream inspector to
 the backend. This vulnerability is fixed in 0.0.30. (CVE-2026-53537)

Solution

Update the python-multipart library and its related packages to version 0.0.30 or later.

See Also

https://github.com/advisories/GHSA-vffw-93wf-4j4q

Plugin Details

Severity: Medium

ID: 443225

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 6/16/2026

Updated: 6/29/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2026-53537

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/15/2026

Vulnerability Publication Date: 6/15/2026

Reference Information

CVE: CVE-2026-53537