GHSA-f963-4cq8-2gw7 — xwiki-platform-web-templa…
CRITICALGHSA-f963-4cq8-2gw7 is a critical-severity (CVSS 9) Improper Privilege Management vulnerability in org.xwiki.platform:xwiki-platform-web-templates. A fix is available for org.xwiki.platform:xwiki-platform-web-templates — see the affected versions and patch details below.
In XWiki Platform, payloads stored in content is executed when a user with script/programming right edit them
Exploitation Status
No confirmed exploitation observed yet
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-f963-4cq8-2gw7.
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.
How urgent is this, really
GHSA-f963-4cq8-2gw7 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,333 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
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-1org.xwiki.platform:xwiki-platform-web-templates: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, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-f963-4cq8-2gw7 can be triaged on real exposure rather than presence alone.
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 Security finds GHSA-f963-4cq8-2gw7 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.