Ghost vulnerable to XSS via malicious Portal preview links
Impact
An attacker was able to craft a malicious link that, when accessed by an authenticated staff user or member, would execute JavaScript with the victim's permissions, potentially leading to account takeover.
Vulnerable versions
This vulnerability is present in Ghost versions:
- v5.43.0 to v5.120.4
- v6.0.0 to v6.14.0
As well as in Portal versions:
- v2.29.1 to v2.51.4
- v2.52.0 to v2.57.0
Patches
Ghost automatically loads the latest patch of the members Portal component via CDN. Therefore:
- For Ghost 5.x users, upgrading to v5.121.0 or later fixes the vulnerability (loads Portal v2.51.5, which contains the patch)
- For Ghost 6.x users, upgrading to v6.15.0 or later fixes the vulnerability (loads Portal v2.57.1, which contains the patch)
For Ghost installations using a customised or self-hosted version of Portal, it will be necessary to manually rebuild from or update to the latest patch version.
References
Ghost thanks Younes Belalia for discovering and disclosing this vulnerability responsibly.
For more information
If users have any questions or comments about this advisory, email Ghost at security@ghost.org.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de npm | ghost | >= 5.43.0, < 5.121.0, >= 6.0.0, < 6.15.0 | 5.121.0, 6.15.0 |
| Paquete de npm | @tryghost/portal | >= 2.29.1, < 2.51.5, >= 2.52.0, < 2.57.1 | 2.51.5, 2.57.1 |
Referencias
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- Debilidad (CWE)
CWE-79- Plataforma
- npm
- Paquete
ghost, @tryghost/portal- Publicada
- 28.01.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-gv6q-2m97-882h - CC BY 4.0
Historial de vulnerabilidades: ghost
Todas las vulnerabilidades publicadas de este paquete (Paquete de npm), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 61
- Primera → última
- 04.2021 10.2026
- Sin corrección
- 3
- Explotada en ataques
- 0
Distribución por gravedad
- Crítica 4
- Alta 16
- Media 38
- Baja 3
Divulgaciones por año
- 2021: 5
- 2022: 4
- 2023: 3
- 2024: 3
- 2025: 1
- 2026: 45
-
Ghost vulnerable to XSS via malicious Portal preview links esta entrada
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