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GHSA-3jh3-prx3-w6wc

MediumCVSS 5.9 / 10
Published Feb 23, 2026·Last modified Feb 24, 2026
Affected Components(0)

No affected components available

Description

A stored Cross-site Scripting (XSS) vulnerability exists in the editableTable.twig component when using the html column type. The application fails to sanitize the input, 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 Single-line text
    • Note: The vulnerable Column Type is html, but it's not available in the UI dropdown.
  3. In Default Values section, add a row with the following payload: 
    <img src=x onerror="alert('XSS')">
  4. Enable Static Rows
  5. Intercept the Save Field request using a proxy tool (e.g., Burp Suite) or use cURL directly
  6. Modify the request body and change the types[craft-fields-Table][columns][col3][type] parameter from singleline to html
  7. Forward the request to save the field
  8. Use the field in any object (e.g. user profile fields) → then visit the any user's profile
  9. Notice the XSS execution
  10. The XSS will also trigger when an administrator attempts to edit this field, as the malicious payload is executed within the field configuration page, too.

Resources

https://github.com/craftcms/cms/commit/f5d488d9bb6eff7670ed2c2fe30e15692e92c52b

Risk Scores
Base Score
5.9

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges.

Threat Intelligence
2.1

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS
0.22%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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