GHSA-w4fj-87j5-f25c
MEDIUMGHSA-w4fj-87j5-f25c is a medium-severity (CVSS 6.1) vulnerability in org.xwiki.platform:xwiki-platform-web-templates. O3 Security confirms whether GHSA-w4fj-87j5-f25c is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
XWiki has Reflected Cross-Site Scripting (XSS) in page history compare
Blast Radius
org.xwiki.platform:xwiki-platform-web-templates☕org.xwiki.platform:xwiki-platform-web-templates☕org.xwiki.platform:xwiki-platform-web-templatesReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
Impact
A reflected cross-site scripting vulnerability (XSS) in the compare view between revisions of a page allows executing JavaScript code in the user's browser. If the current user is an admin, this can not only affect the current user but also the confidentiality, integrity and availability of the whole XWiki instance.
Patches
The problem has been patched by properly escaping the URL parameters.
Workarounds
The patch can be applied manually to templates/changesdoc.vm in the deployed WAR.
Attribution
XWiki thanks Mike Cole @mikecole-mg for discovering and reporting this vulnerability.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.xwiki.platform:xwiki-platform-web-templates | ≥ 10.4-rc-1&&< 16.10.16 | 16.10.16 |
| ☕Maven | org.xwiki.platform:xwiki-platform-web-templates | ≥ 17.0.0-rc-1&&< 17.4.8 | 17.4.8 |
| ☕Maven | org.xwiki.platform:xwiki-platform-web-templates | ≥ 17.5.0-rc-1&&< 17.10.1 | 17.10.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.xwiki.platform:xwiki-platform-web-templates. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update org.xwiki.platform:xwiki-platform-web-templates to 16.10.16 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-w4fj-87j5-f25c is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-w4fj-87j5-f25c is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-w4fj-87j5-f25c. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-w4fj-87j5-f25c in your dependencies?
O3 detects GHSA-w4fj-87j5-f25c across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.