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SCA: security update for dompurify (GHSA-h7mw-gpvr-xq4m)

medium Tenable Cloud Security Plugin ID 440730

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. Versions prior to 3.4.0
 have an inconsistency between FORBID_TAGS and FORBID_ATTR handling when function-based ADD_TAGS is used.
 Commit c361baa added an early exit for FORBID_ATTR at line 1214. The same fix was not applied to
 FORBID_TAGS. At line 1118-1123, when EXTRA_ELEMENT_HANDLING.tagCheck returns true, the short-circuit
 evaluation skips the FORBID_TAGS check entirely. This allows forbidden elements to survive sanitization
 with their attributes intact. Version 3.4.0 patches the issue. (CVE-2026-41240)

Solution

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

See Also

https://github.com/advisories/GHSA-h7mw-gpvr-xq4m

Plugin Details

Severity: Medium

ID: 440730

Version: Revision 1.7

Type: Local

Family: SCA Checks

Published: 4/22/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 2.3

Percentile: 9.53

Vendor

Vendor Severity: Medium

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-2026-41240

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: 6

Threat Score: 5.4

Threat Vector: CVSS:4.0/E:P

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/22/2026

Vulnerability Publication Date: 4/22/2026

Reference Information

CVE: CVE-2026-41240