Detections
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Echo: dompurify: security update to 3.4.0

medium Tenable Self-Hosted Container Security Plugin ID 458986

Description

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

 - DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Starting in version
 1.0.10 and prior to version 3.4.0, `SAFE_FOR_TEMPLATES` strips `{{...}}` expressions from untrusted HTML.
 This works in string mode but not with `RETURN_DOM` or `RETURN_DOM_FRAGMENT`, allowing XSS via template-
 evaluating frameworks like Vue 2. Version 3.4.0 patches the issue. (CVE-2026-41239)

Solution

Update the dompurify library and its related packages to version 3.4.0 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-41239

Plugin Details

Severity: Medium

ID: 458986

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/3/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.59

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-41239

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/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: 9/28/2026

Vulnerability Publication Date: 4/22/2026

Reference Information

CVE: CVE-2026-41239