Detections
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Echo: dompurify: security update to 3.4.8

medium Tenable Cloud Security Plugin ID 457072

Description

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

 - DOMPurify versions >=3.0.0 and before 3.4.8, when configured with SAFE_FOR_TEMPLATES together with a DOM
 output mode (RETURN_DOM, RETURN_DOM_FRAGMENT, or IN_PLACE), fail to strip template expressions (e.g.
 ${evil}, {{evil}}, <%evil%>) inside <template> element content. The final normalization/scrub pass
 (_scrubTemplateExpressions) uses a NodeIterator and node.normalize() that do not descend into
 template.content, so expressions that only form after adjacent text nodes merge survive sanitization. This
 bypasses SAFE_FOR_TEMPLATES and can allow a downstream template engine to evaluate attacker-supplied
 expressions. The string output path is not affected. (CVE-2026-65900)

Solution

Update the dompurify library and its related packages to version 3.4.8 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-65900

Plugin Details

Severity: Medium

ID: 457072

Version: Revision 1.1

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: Low

Score: 2.3

Percentile: 9.77

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-2026-65900

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

CVSS v4

Risk Factor: Medium

Base Score: 5.1

Threat Score: 2

Threat Vector: CVSS:4.0/E:P

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

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-2026-65900