SB2026061671 - Cross-site scripting in Craft CMS

Description

This security bulletin contains information about 1 vulnerability.

1) Cross-site scripting (CVE-ID: N/A)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: 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

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 update from vendor's website.

References

• https://github.com/craftcms/cms/security/advisories/GHSA-24x4-j6x9-rfw5
• https://github.com/craftcms/cms/commit/6bbb66038a268552180ca5c8eed9f46ea25a4417