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Advisory record · GHSA-h2xq-h7f9-vh6c

XWiki Blog Application home page vulnerable to Stored XSS via Post Title

CVSS 8.6 HighEPSS 0.0044 · 38th percentile

Published by the GitHub Advisory Database at 4 Mar 2026, 18:16 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.xwiki.contrib.blog:application-blog-uiMaven>=9.15, <9.15.79.15.7
Identifiers
GHSA-h2xq-h7f9-vh6c · CVE-2025-66024
Weakness (CWE)
CWE-79 · CWE-116
Tags
Published
4 Mar 2026
Updated
5 Aug 2026

Machine-written summary

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

The XWiki Blog Application (org.xwiki.contrib.blog:application-blog-ui) versions 9.15 up to 9.15.7 is vulnerable to stored cross-site scripting through the blog post title, which is inserted into the HTML title tag without escaping. An attacker who can create or edit blog posts can run JavaScript in the browser of any user who views the post, including administrators. Upgrade to version 9.15.7, which adds the missing escaping. No workarounds are known.

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
8.6 High 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0044, the 38th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:19 UTC First seen by agentprime
  2. 31 Oct 2026, 14:19 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.