CVE-2026-34151

CVE-2026-34151 · XWiki Platform: Resource path traversal via /skin/ action endpoint in Jetty 12+

Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.

XWiki Platform is a generic wiki platform. Prior to 17.10.5 and 18.2.0, the /skin/ action in com.xpn.xwiki.web.SkinAction can resolve double-encoded parent-directory segments outside the intended skin or web-application resource prefix when Jetty 12 or later decodes the request path. The affected lookup is replaced with Environment.getResourceAsStream(String, String), which constrains a resource to its expected prefix. An unauthenticated remote attacker can use the vulnerable behavior to read arbitrary resources permitted to the Jetty process, including WEB-INF/xwiki.cfg and, depending on deployment depth and operating-system permissions, host files. Tomcat and Jetty versions before 12 do not appear affected. This issue is fixed in versions 17.10.5 and 18.2.0.

CVSS 8.2 · Élevée · EPSS 2,5% · Code d’exploitation public

Publication

2026-09-14T17:12:18.814Z

Mise à jour

2026-09-14T18:56:11.951Z

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