Craft CMS has Stored XSS in Table Field in its "Row Heading" Column Type
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
- An administrator account
allowAdminChangesmust be enabled in production, which is against security recommendations.
Steps to Reproduce
- Navigate to Settings → Fields and create a new field with Type: Table
- Add a Column Heading and set Column Type to
Row Heading - In Default Values section, add a row with the following payload:
html
<img src=x onerror="alert('XSS')"> - Enable
Static Rows - Use the field in any object (e.g., user profile fields) → then visit any user’s profile
- Notice the XSS execution
Resources
https://github.com/craftcms/cms/commit/7b372de262b8d9d2ce859f32780c3715719b6f5a
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de Composer | craftcms/cms | >= 4.5.0-beta.1, < 4.16.19, >= 5.0.0-RC1, < 5.8.23 | 4.16.19, 5.8.23 |
Referencias
- https://github.com/craftcms/cms/security/advisories/GHSA-6j87-m5qx-9fqp
- https://nvd.nist.gov/vuln/detail/CVE-2026-56383
- https://github.com/craftcms/cms/commit/7b372de262b8d9d2ce859f32780c3715719b6f5a
- https://craftcms.com/knowledge-base/securing-craft#set-allowAdminChanges-to-false-in-production
- https://github.com/craftcms/cms
- https://github.com/craftcms/cms/releases/tag/4.16.19
- https://github.com/craftcms/cms/releases/tag/5.8.23
- https://www.vulncheck.com/advisories/craft-cms-stored-xss-in-table-field-via-row-heading-column-type
- Vector CVSS
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N- Debilidad (CWE)
CWE-79- Plataforma
- Composer
- Paquete
craftcms/cms- Publicada
- 25.02.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-6j87-m5qx-9fqp - CC BY 4.0
Historial de vulnerabilidades: craftcms/cms
Todas las vulnerabilidades publicadas de este paquete (Paquete de Composer), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 127
- Primera → última
- 07.2021 08.2026
- Sin corrección
- 6
- Explotada en ataques
- 4
Distribución por gravedad
- Crítica 9
- Alta 41
- Media 65
- Baja 12
Divulgaciones por año
- 2021: 3
- 2022: 22
- 2023: 13
- 2024: 9
- 2025: 6
- 2026: 74
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Craft CMS has Stored XSS in Table Field in its "Row Heading" Column Type esta entrada
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