Detections
Analytics
SCA: security update for python-multipart (GHSA-5rvq-cxj2-64vf)
high Tenable Self-Hosted Container Security Plugin ID 443222
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, when parsing
application/x-www-form-urlencoded bodies, QuerystringParser located the field separator with a two step
lookup: it first scanned the entire remaining buffer for &, and only when no & existed anywhere ahead did
it fall back to scanning for ;. For a body that uses ; as the separator and contains no &, every field
iteration performed a full failed & scan over the entire remaining buffer before locating the nearby ;.
With N semicolon separated fields in a chunk of size B, this yields O(B^2) byte comparisons per chunk. An
attacker can submit a small crafted body of the form a;a;a;... and cause the parser to spend seconds of
CPU per request. A handful of concurrent requests can exhaust worker processes. This vulnerability is
fixed in 0.0.30. (CVE-2026-53539)
Solution
Update the python-multipart library and its related packages to version 0.0.30 or later.See Also
Plugin Details
Severity: High
ID: 443222
Version: Revision 1.4
Type: Local
Family: SCA Checks
Published: 6/16/2026
Updated: 7/6/2026
Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Low
Score: 3
Percentile: 23.73
Vendor
Vendor Severity: High
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 5.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2026-53539
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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-2026-53539