SB2025010332 - Cross-site scripting in Trix

Description

This security bulletin contains information about 1 vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2025-21610)

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

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/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 code in the user's session.

The vulnerability exists due to cross-site scripting in the link field when processing a pasted javascript: URL. A remote attacker can trick the user into copy-pasting a malicious link to execute arbitrary JavaScript code in the user's session.

User interaction is required to paste the crafted link.

Remediation

Install update from vendor's website.

References

• https://github.com/basecamp/trix/security/advisories/GHSA-j386-3444-qgwg
• https://github.com/advisories/GHSA-j386-3444-qgwg