Detections
Analytics

SCA: security update for ujson (GHSA-3j69-69wj-xqx2)

medium Tenable Self-Hosted Container Security Plugin ID 443641

Description

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

 - UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to
 5.13.0, ujson.dumps() (or ujson.dump() or ujson.encode()) have a reject_bytes=False option. When set, they
 may accept malformed or truncated UTF-8 byte sequences, silently rewriting them into different Unicode
 characters instead of rejecting them. This leads to input validation bypass and data integrity issues.
 This vulnerability is fixed in 5.13.0. (CVE-2026-54911)

Solution

Update the ujson library and its related packages to version 5.13.0 or later.

See Also

https://github.com/advisories/GHSA-3j69-69wj-xqx2

Plugin Details

Severity: Medium

ID: 443641

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 6/20/2026

Updated: 7/6/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.77

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2026-54911

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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: 6/19/2026

Vulnerability Publication Date: 6/19/2026

Reference Information

CVE: CVE-2026-54911

cwe: CWE-20