Cross-site scripting in Trix - CVE-2025-46812
Published: April 28, 2026
Vulnerability identifier: #VU128362
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: CVE-2025-46812
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Basecamp
Affected software:
Trix
Trix
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary JavaScript code.
The vulnerability exists due to cross-site scripting in the Trix editor paste handling when processing pasted malicious code. A remote attacker can trick a user into copying and pasting crafted content to execute arbitrary JavaScript code.
User interaction is required to copy and paste the crafted content.
How to mitigate CVE-2025-46812
Install security update from vendor's website.