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Advisory record · GHSA-9xc6-c2rm-f27p

XWiki vulnerable to remote code execution through insufficient protection against {{/html}} injection

CVSS 8.7 HighEPSS 0.011 · 66th percentile

Published by the GitHub Advisory Database at 10 Dec 2025, 15:47 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.xwiki.rendering:xwiki-rendering-xmlMaven<16.10.10 || >=17.0.0-rc-1, <17.4.3 || >=17.5.0-rc-1, <17.6.0-rc-116.10.10, 17.4.3, 17.6.0-rc-1
Identifiers
GHSA-9xc6-c2rm-f27p · CVE-2025-66474
Weakness (CWE)
CWE-94 · CWE-95
Tags
Published
10 Dec 2025
Updated
20 Dec 2025

Machine-written summary

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

xwiki-rendering-xml versions before 16.10.10, from 17.0.0-rc-1 before 17.4.3, and from 17.5.0-rc-1 before 17.6.0-rc-1 are affected. Any user who can edit a document, including their own profile, can inject script macros, enabling remote code execution. Upgrade to 16.10.10, 17.4.3, or 17.6.0-rc-1.

Written 7 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
8.7 High 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.011, the 66th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:09 UTC First seen by agentprime
  2. 31 Oct 2026, 15:09 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.