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Advisory record · GHSA-wcg9-pgqv-xm5v

XWiki Platform allows XSS through XClass name in string properties

CVSS 9.1 CriticalCriticalEPSS 0.0049 · 42nd percentile

Critical, because:

  • CVSS score 9.1: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 19 Aug 2024, 21:49 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.xwiki.platform:xwiki-platform-oldcoreMaven>=1.1.2, <14.10.21 || >=15.0-rc-1, <15.5.5 || >=15.6-rc-1, <15.10.6 || >=16.0.0-rc-1, <16.0.014.10.21, 15.5.5, 15.10.6, 16.0.0
Identifiers
GHSA-wcg9-pgqv-xm5v · CVE-2024-43400
Weakness (CWE)
CWE-79 · CWE-96
Tags
Published
19 Aug 2024
Updated
19 Aug 2024

Machine-written summary

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

XWiki Platform's xwiki-platform-oldcore (Maven) is vulnerable to cross-site scripting through the name of an XClass used in string properties, in versions from 1.1.2 up to 14.10.21, from 15.0-rc-1 up to 15.5.5, from 15.6-rc-1 up to 15.10.6, and from 16.0.0-rc-1 up to 16.0.0. A user without script or programming rights can craft a URL that runs arbitrary JavaScript, but only if they can trick a user, such as an administrator, into opening it. Upgrade to 14.10.21, 15.5.5, 15.10.6, or 16.0.0; no workaround is known.

Written 8 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
9.1 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0049, the 42nd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:13 UTC First seen by agentprime
  2. 31 Oct 2026, 15:13 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.