GHSA-94pf-92hw-2hjc
CRITICALXWiki Platform vulnerable to Code injection through NotificationRSSService
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-notifications-ui☕org.xwiki.platform:xwiki-platform-notifications-uiReal-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
Any user who can edit their own user profile and notification settings can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. This can be reproduced with the following steps:
- Login as a user without script or programming right.
- Go to the notifications preferences in your user profile.
- Disable the "Own Events Filter" and enable notifications in the notification menu for "Like".
- Set your first name to
{{cache id="security" timeToLive="1"}}{{groovy}}println("Hello from groovy!"){{/groovy}}{{/cache}} - Click on the like button at the bottom left of the user profile.
- Click on the notifications bell in the top bar and then on "RSS Feed".
If the text "Profile of Hello from groovy!" and/or "liked by Hello from groovy!" is displayed, the attack succeeded. The expected result would have been that the entered first name is displayed as-is in the description of the feed.
Patches
This has been patched in XWiki 14.10.6 and 15.2RC1.
Workarounds
The main security fix can be manually applied by patching the affected document XWiki.Notifications.Code.NotificationRSSService as shown in the patch. This will break the link to the differences, though as this requires additional changes to Velocity templates as shown in the patch. While the default template is available in the instance and can be easily patched, the template for mentions is contained in a .jar-file and thus cannot be fixed without replacing that jar.
References
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.xwiki.platform:xwiki-platform-notifications-ui | ≥ 9.6-rc-1&&< 14.10.6 | 14.10.6 |
| ☕Maven | org.xwiki.platform:xwiki-platform-notifications-ui | ≥ 15.0-rc-1&&< 15.2-rc-1 | 15.2-rc-1 |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
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-notifications-ui. 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-notifications-ui to 14.10.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-94pf-92hw-2hjc 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-94pf-92hw-2hjc 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-94pf-92hw-2hjc. 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-94pf-92hw-2hjc in your dependencies?
O3 detects GHSA-94pf-92hw-2hjc across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.