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Advisory record · GHSA-w4fj-87j5-f25c

XWiki has Reflected Cross-Site Scripting (XSS) in page history compare

CVSS 6.5 MediumEPSS 0.0055 · 46th percentile

Published by the GitHub Advisory Database at 14 Apr 2026, 22:33 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.xwiki.platform:xwiki-platform-web-templatesMaven>=10.4-rc-1, <16.10.16 || >=17.0.0-rc-1, <17.4.8 || >=17.5.0-rc-1, <17.10.116.10.16, 17.4.8, 17.10.1
Identifiers
GHSA-w4fj-87j5-f25c · CVE-2026-40105
Weakness (CWE)
CWE-80
Tags
Published
14 Apr 2026
Updated
5 May 2026

Machine-written summary

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

The xwiki-platform-web-templates Maven package, versions from 10.4-rc-1 up to 16.10.16, from 17.0.0-rc-1 up to 17.4.8, and from 17.5.0-rc-1 up to 17.10.1, is affected by a reflected cross-site scripting flaw in the page history compare view. An attacker can get a user to open a crafted link and run JavaScript in their browser, and if that user is an admin, the attacker can affect the whole XWiki instance. Upgrade to 16.10.16, 17.4.8, or 17.10.1, depending on your release line.

Written 3 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
6.5 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0055, the 46th percentile, on 11 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.