XWiki Platform Old Core: Resource path traversal via /skin/ action endpoint in Jetty 12+
Impact
With Jetty 12+ a user can craft a URL to access any resource the Jetty instance is allowed to access.
For example http://[host]/xwiki/bin/skin/..%252f/..%252f..%252f..%252f..%252f..%252f..%252f..%252fetc/passwd allows downloading the content of the /etc/passwd file, provided Jetty is allowed to read it, and if your XWiki webapp is located exactly 5 levels below / (like /var/lib/jetty/webapps/xwiki, which is the case in the docker image, for example).
Another example which does not go out of the XWiki webapp, but it's still a vulnerability (since users should not be allowed to access Hibernate or XWiki configuration files) is http://[host]/xwiki/bin/skin/..%252f/..%252fWEB-INF/xwiki.cfg.
Patches
This vulnerability has been patched in XWiki 17.10.5 and 18.2.0.
Workarounds
A possible workaround is to use a different application server, like Jetty < 12 (in the case of XWiki < 17) or Tomcat, which don't seem to be impacted.
Resources
For more information
If there are any questions or comments about this advisory:
- Open an issue in Jira XWiki.org
- Send an email to the Security Mailing List
Attribution
Lê Ngọc Khoa reported the vulnerability.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Java / Kotlin (Maven) | org.xwiki.platform:xwiki-platform-oldcore | < 17.10.5, >= 18.0.0-rc-1, < 18.2.0 | 17.10.5, 18.2.0 |
Referencias
- Vector CVSS
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N- Debilidad (CWE)
CWE-24- Plataforma
- Java / Kotlin (Maven)
- Paquete
org.xwiki.platform:xwiki-platform-oldcore- Publicada
- 07.07.2026
- Actualizado
- 11.10.2026 12:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-qj4x-9g63-25g6 - CC BY 4.0
Historial de vulnerabilidades: org.xwiki.platform:xwiki-platform-oldcore
Todas las vulnerabilidades publicadas de este paquete (Java / Kotlin (Maven)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 46
- Primera → última
- 09.2020 07.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Crítica 12
- Alta 17
- Media 15
- Baja 2
Divulgaciones por año
- 2020: 2
- 2021: 1
- 2022: 12
- 2023: 15
- 2024: 7
- 2025: 6
- 2026: 3
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XWiki Platform Old Core: Resource path traversal via /skin/ action endpoint in Jetty 12+ esta entrada
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