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Echo: sanitize-html: security update to 2.17.7

medium Tenable Self-Hosted Container Security Plugin ID 461323

Description

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

 - ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple
 HTML sanitizer with a clear API. From version 1.9.0 until version 2.17.7, packages/sanitize-html/index.js
 validates an animation value attribute as one flat URL and does not recognize that attributeName selecting
 href or xlink:href gives the sibling values, from, to, or by attribute SVG SMIL URL semantics. In
 configurations that allow the animate, animateColor, animateMotion, animateTransform, or set elements, a
 values list can begin with a safe fragment and contain a later executable destination that survives
 allowedSchemesAppliedToAttributes checking. When the sanitized SVG is rendered, the browser can copy that
 later destination into the live link, and a victim who activates the link can execute script in the
 application's origin. This issue is fixed in version 2.17.7. (CVE-2026-84371)

Solution

Update the sanitize-html library and its related packages to version 2.17.7 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-84371

Plugin Details

Severity: Medium

ID: 461323

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: 9.81

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2026-84371

CVSS v3

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.7

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

Vulnerability Publication Date: 9/1/2026

Reference Information

CVE: CVE-2026-84371