SB20260428199 - Cross-site scripting in Trix

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Main Vulnerability Database SB20260428199

SB20260428199 - Cross-site scripting in Trix

Published: April 28, 2026

Security Bulletin ID SB20260428199
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

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: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 in the victim's browser.

The vulnerability exists due to cross-site scripting in the Level0InputController drag-and-drop handling when processing a crafted application/x-trix-document JSON payload dropped into the editor. A remote attacker can provide a draggable element containing a javascript: URI in the href attribute to execute arbitrary JavaScript in the victim's browser.

User interaction is required to drag and drop attacker-controlled content into the editor, and exploitation only affects environments using the fallback Level0InputController.


Remediation

Install update from vendor's website.

References