SCA: security update for craftcms/cms (GHSA-4mgv-366x-qxvx)

medium Tenable Cloud Security Plugin ID 438398

Description

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

- Craft CMS 4.x (>= 4.0.0-RC1, < 4.17.0-beta.1) and 5.x (>= 5.0.0-RC1, < 5.9.0-beta.1) contain multiple
stored cross-site scripting vulnerabilities where settings names and field option labels are rendered
without sanitization (e.g., via the checkbox.twig template, which used {{ label|raw }}). An authenticated
administrator (with allowAdminChanges enabled) can inject malicious payloads into section names, volume
names, user group names, global set names, generated field names, checkbox/radio option labels, and custom
source labels, causing arbitrary JavaScript to execute in other users' control-panel sessions. Fixed in
4.17.0-beta.1 and 5.9.0-beta.1. (CVE-2026-56393)

Solution

Update the craftcms/cms library and its related packages to version 4.17.0-beta.1 or later.

See Also

https://github.com/advisories/GHSA-4mgv-366x-qxvx

Plugin Details

Severity: Medium

ID: 438398

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 3/5/2026

Updated: 8/7/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 2.3

Percentile: 9.49

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 3.5

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

CVSS Score Source: CVE-2026-56393

CVSS v3

Risk Factor: Medium

Base Score: 4.8

Temporal Score: 4.2

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

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

CVSS v4

Risk Factor: Medium

Base Score: 4.6

Threat Score: 1

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/3/2026

Vulnerability Publication Date: 3/3/2026

Reference Information

CVE: CVE-2026-56393

cwe: CWE-79