GHSA-f963-4cq8-2gw7
CRITICALIn XWiki Platform, payloads stored in content is executed when a user with script/programming right edit them
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
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 user without script/programming right can trick a user with elevated rights to edit a content with a malicious payload using a WYSIWYG editor. The user with elevated rights is not warned beforehand that they are going to edit possibly dangerous content. The payload is executed at edit time.
Patches
This vulnerability has been patched in XWiki 15.10RC1.
Workarounds
No workaround. It is advised to upgrade to XWiki 15.10+.
References
- https://jira.xwiki.org/browse/XWIKI-20331
- https://jira.xwiki.org/browse/XWIKI-21311
- https://jira.xwiki.org/browse/XWIKI-21481
- https://jira.xwiki.org/browse/XWIKI-21482
- https://jira.xwiki.org/browse/XWIKI-21483
- https://jira.xwiki.org/browse/XWIKI-21484
- https://jira.xwiki.org/browse/XWIKI-21485
- https://jira.xwiki.org/browse/XWIKI-21486
- https://jira.xwiki.org/browse/XWIKI-21487
- https://jira.xwiki.org/browse/XWIKI-21488
- https://jira.xwiki.org/browse/XWIKI-21489
- https://jira.xwiki.org/browse/XWIKI-21490
For more information
If you have any questions or comments about this advisory:
- Open an issue in Jira XWiki.org
- Email us at Security Mailing List
Attribution
This vulnerability has been reported on Intigriti by @floerer
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.xwiki.platform:xwiki-platform-web-templates | all versions | 15.10-rc-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 15.10-rc-1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-f963-4cq8-2gw7 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-f963-4cq8-2gw7 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-f963-4cq8-2gw7. 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-f963-4cq8-2gw7 in your dependencies?
O3 detects GHSA-f963-4cq8-2gw7 across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.