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Echo: dompurify: security update to 3.4.6

medium Tenable Self-Hosted Container Security Plugin ID 464746

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. Prior to 3.4.6,
 DOMPurify.sanitize(root, { IN_PLACE: true }) could preserve event-handler attributes on an attacker-
 controlled <form> root when a descendant name clobbered properties checked by _isClobbered, because
 _forceRemove no-opped on the parent-less root and _sanitizeAttributes returned early. This issue is fixed
 in version 3.4.6. (CVE-2026-49459)

Solution

Update the dompurify library and its related packages to version 3.4.6 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-49459

Plugin Details

Severity: Medium

ID: 464746

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: Low

Score: 2.3

Percentile: 9.64

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

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

CVSS Score Source: CVE-2026-49459

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.5

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/28/2026

Vulnerability Publication Date: 6/15/2026

Reference Information

CVE: CVE-2026-49459