Detections
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Echo: fast-xml-parser: security update to 4.5.4

medium Tenable Cloud Security Plugin ID 457586

Description

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

 - fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without
 C/C++ based libraries and no callback. Prior to version 5.3.8, the application crashes with stack overflow
 when user use XML builder with `preserveOrder:true`. Version 5.3.8 fixes the issue. As a workaround, use
 XML builder with `preserveOrder:false` or check the input data before passing to builder. (CVE-2026-27942)

Solution

Update the fast-xml-parser library and its related packages to version 4.5.4 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-27942

Plugin Details

Severity: Medium

ID: 457586

Version: Revision 1.2

Type: Local

Published: 10/2/2026

Updated: 10/5/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.39

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-2026-27942

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

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 2.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2026

Vulnerability Publication Date: 2/26/2026

Reference Information

CVE: CVE-2026-27942