Cross-Site Scripting in BookStack
Impact
A user with permission to create comments could POST HTML directly to the system to be saved in a comment, which would then be executed/displayed to others users viewing the comment. Through this vulnerability custom JavaScript code could be injected and therefore ran on other user machines.
This most impacts scenarios where not-trusted users are given permission to create comments.
Patches
The issue was addressed in BookStack v0.29.2.
After upgrading, The command php artisan bookstack:regenerate-comment-content should be ran to remove any pre-existing dangerous content.
Workarounds
Comments can be disabled in the system settings to prevent them being shown to users. Alternatively, comment creation permissions can be altered as required to only those who are trusted but this will not address existing exploitation of this vulnerability.
References
- BookStack Beta v0.29.2
- JVN#41035278
- BookStack Blog Post
For more information
If you have any questions or comments about this advisory:
- Open an issue in the BookStack GitHub repository.
- Ask on the BookStack Discord chat.
- Follow the BookStack Security Advice to contact someone privately.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de Composer | ssddanbrown/bookstack | >= 0.18.0, < 0.29.2 | 0.29.2 |
Referencias
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L- Debilidad (CWE)
CWE-79- Plataforma
- Composer
- Paquete
ssddanbrown/bookstack- Publicada
- 07.05.2020
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-5vf7-q87h-pg6w - CC BY 4.0
Historial de vulnerabilidades: ssddanbrown/bookstack
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
- 10
- Primera → última
- 03.2020 07.2024
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 4
- Media 5
- Baja 1
Divulgaciones por año
- 2020: 2
- 2021: 4
- 2022: 3
- 2023: 0
- 2024: 1
- 2025: 0
- 2026: 0
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