Cross-site scripting in Craft CMS - #VU134673

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU134673

Cross-site scripting in Craft CMS - #VU134673

Published: June 16, 2026


Vulnerability identifier: #VU134673
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Pixel & Tonic, Inc.
Affected software:
Craft CMS

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary JavaScript in an administrator's control panel session.

The vulnerability exists due to cross-site scripting in CraftSupportWidget.js when rendering GitHub issue titles returned by the GitHub API in the CraftSupport widget's "Give feedback" search results. A remote attacker can create a crafted GitHub issue title to execute arbitrary JavaScript in an administrator's control panel session.

User interaction is required: an administrator must use the CraftSupport widget's "Give feedback" screen and enter a search term that returns the crafted issue.


Remediation

Install security update from vendor's website.

Sources