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GHSA-6j87-m5qx-9fqplow2.3

Craft CMS has Stored XSS in Table Field in its "Row Heading" Column Type

Impact

A stored Cross-site Scripting (XSS) vulnerability exists in the editableTable.twig component when using the Row Heading column type. The application fails to sanitize input within row headings, allowing an attacker to execute arbitrary JavaScript when another user views a page with the malicious table field.

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

craftcms/cms Packagist
Affected rangeRecorded fix
From 4.5.0-beta.1 before 4.16.19Ecosystem versions4.16.19
From 5.0.0-RC1 before 5.8.23Ecosystem versions5.8.23

Version evidence: OSV · GHSA-6j87-m5qx-9fqp

View original version evidence (291 explicit versions)

Original source description

A stored Cross-site Scripting (XSS) vulnerability exists in the editableTable.twig component when using the Row Heading column type. The application fails to sanitize input within row headings, allowing an attacker to execute arbitrary JavaScript when another user views a page with the malicious table field.

Prerequisites

Steps to Reproduce

  1. Navigate to Settings → Fields and create a new field with Type: Table
  2. Add a Column Heading and set Column Type to Row Heading
  3. In Default Values section, add a row with the following payload:
    <img src=x onerror="alert('XSS')">
  4. Enable Static Rows
  5. Use the field in any object (e.g., user profile fields) → then visit any user’s profile
  6. Notice the XSS execution

Resources

https://github.com/craftcms/cms/commit/7b372de262b8d9d2ce859f32780c3715719b6f5a

References