Magazine Blocks <= 1.8.6 - Missing Authorization to Authenticated (Contributor+) Arbitrary Post Modification / Site-Wide Template Takeover via Builder Templates REST Endpoint
The Magazine Blocks – Blog Designer, Magazine & Newspaper Website Builder, Page Builder with Posts Blocks, Post Grid plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.8.6. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to demote administrator-owned published builder templates (header, footer, front page, single, archive, 404, and search) to draft status and replace them with attacker-authored block content rendered site-wide, enabling defacement, phishing, and SEO spam. This is possible because the mzb-builder-template post type is registered with capability_type='post' and exposed via the REST API, and the _mzb_template meta key is accessible to any user with edit_posts capability, meaning Contributor-level users and above can trigger the vulnerable save_post() hook.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Plugin de WordPress | Magazine Blocks – Blog Designer, Magazine & Newspaper Website Builder, Page Builder with Posts Blocks, Post Grid | <= 1.8.6 | 1.8.7 |
Referencias
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N- Debilidad (CWE)
CWE-862- Plataforma
- WordPress
- Paquete
Magazine Blocks – Blog Designer, Magazine & Newspaper Website Builder, Page Builder with Posts Blocks, Post Grid- Publicada
- 17.09.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
Wordfence Intelligence - 7f66d26a-8eb7-4b29-bb7f-afdd762be4b2 - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Historial de vulnerabilidades: Magazine Blocks – Blog Designer, Magazine & Newspaper Website Builder, Page Builder with Posts Blocks, Post Grid
Todas las vulnerabilidades publicadas de este paquete (Plugin de WordPress), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 9
- Primera → última
- 05.2024 09.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Media 9
Divulgaciones por año
- 2024: 4
- 2025: 0
- 2026: 5
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Magazine Blocks <= 1.8.6 - Missing Authorization to Authenticated (Contributor+) Arbitrary Post Modification / Site-Wide Template Takeover via Builder Templates REST Endpoint esta entrada
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