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Advisory record · GHSA-qj4x-9g63-25g6

XWiki Platform Old Core: Resource path traversal via /skin/ action endpoint in Jetty 12+

CVSS 8.2 HighEPSS 0.025 · 84th percentile

Published by the GitHub Advisory Database at 7 Jul 2026, 13:01 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.xwiki.platform:xwiki-platform-oldcoreMaven<17.10.5 || >=18.0.0-rc-1, <18.2.017.10.5, 18.2.0
Identifiers
GHSA-qj4x-9g63-25g6 · CVE-2026-34151
Weakness (CWE)
CWE-24
Tags
Published
7 Jul 2026
Updated
7 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The XWiki Platform Old Core package (Maven org.xwiki.platform:xwiki-platform-oldcore) is vulnerable to path traversal through the /skin/ action endpoint when running on Jetty 12 or later, in versions before 17.10.5 and from 18.0.0-rc-1 before 18.2.0. A remote attacker can craft a URL to read files that the Jetty process is permitted to access, including XWiki configuration files. Upgrade to 17.10.5 or 18.2.0. Running XWiki on Jetty below version 12 or on Tomcat is reported as not affected.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.2 High 4.0 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 CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.025, the 84th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:20 UTC First seen by agentprime
  2. 31 Oct 2026, 14:20 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.