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Advisory record · GHSA-cv55-v6rw-7r5v

XWiki Platform remote code execution from account via custom skins support

CVSS 10.0 CriticalCriticalEPSS 0.014 · 73rd percentile

Critical, because:

  • CVSS score 10.0: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 10 Apr 2024, 17:14 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.xwiki.platform:xwiki-platform-oldcoreMaven>=6.4-milestone-1, <14.10.19 || >=15.0-rc-1, <15.5.4 || >=15.6-rc-1, <15.10-rc-114.10.19, 15.5.4, 15.10-rc-1
Identifiers
GHSA-cv55-v6rw-7r5v · CVE-2024-31987
Weakness (CWE)
CWE-862
Tags
Published
10 Apr 2024
Updated
10 Sept 2026

Machine-written summary

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

The xwiki-platform-oldcore package (Maven org.xwiki.platform) is vulnerable to remote code execution in versions from 6.4-milestone-1 up to 14.10.19, from 15.0-rc-1 up to 15.5.4, and from 15.6-rc-1 up to 15.10-rc-1. A user with no edit, script, or admin rights who can edit their own profile can create a custom skin with a template override that runs with programming rights, allowing code execution on the server. Upgrade to 14.10.19, 15.5.4, 15.10-rc-1, or a later version; the source states there is no workaround other than upgrading.

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
10.0 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.014, the 73rd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:17 UTC First seen by agentprime
  2. 31 Oct 2026, 14:17 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.