GHSA-4wc6-hqv9-qc97 is a critical-severity (CVSS 9) Cross-site Scripting (XSS) vulnerability in org.xwiki.platform:xwiki-platform-appwithinminutes-ui. 1 public exploit reference exists, so weaponization risk is real. A fix is available for org.xwiki.platform:xwiki-platform-appwithinminutes-ui — see the affected versions and patch details below.
XWiki Platform vulnerable to stored cross-site scripting in ClassEditSheet page via name parameters
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
- A successful exploit gives an attacker total control of the affected component, not partial access.
Exploitation and automatability from CISA’s SSVC triage for GHSA-4wc6-hqv9-qc97.
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-4wc6-hqv9-qc97 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 377,166 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-appwithinminutes-ui☕org.xwiki.platform:xwiki-platform-appwithinminutes-ui☕org.xwiki.platform:xwiki-platform-appwithinminutes-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
A stored XSS can be exploited by users with edit rights by adding a AppWithinMinutes.FormFieldCategoryClass class on a page and setting the payload on the page title.
Then, any user visiting /xwiki/bin/view/AppWithinMinutes/ClassEditSheet executes the payload.
See https://jira.xwiki.org/browse/XWIKI-20365 for me details.
Patches
The issue has been patched on XWiki 14.4.8, 14.10.4, and 15.0 ?
Workarounds
The issue can be fixed by updating AppWithinMinutes.ClassEditSheet with this patch.
References
- https://github.com/xwiki/xwiki-platform/commit/1b87fec1e5b5ec00b7a8c3c3f94f6c5e22547392#diff-79e725ec7125cced7d302e1a1f955a76745af26ef28a148981b810e85335d302
- https://jira.xwiki.org/browse/XWIKI-20365
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 René de Sain @renniepak.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.xwiki.platform:xwiki-platform-appwithinminutes-ui | ≥ 5.4.4&&< 14.4.8 | 14.4.8org.xwiki.platform:xwiki-platform-appwithinminutes-ui:14.4.8 |
| ☕Maven | org.xwiki.platform:xwiki-platform-appwithinminutes-ui | ≥ 14.5&&< 14.10.4 | 14.10.4org.xwiki.platform:xwiki-platform-appwithinminutes-ui:14.10.4 |
| ☕Maven | org.xwiki.platform:xwiki-platform-appwithinminutes-ui | ≥ 15.0-rc-1&&< 15.0 | 15.0org.xwiki.platform:xwiki-platform-appwithinminutes-ui:15.0 |
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-appwithinminutes-ui, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.xwiki.platform:xwiki-platform-appwithinminutes-ui to 14.4.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-4wc6-hqv9-qc97 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-4wc6-hqv9-qc97 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-4wc6-hqv9-qc97. 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-4wc6-hqv9-qc97 in your dependencies?
O3 Security finds GHSA-4wc6-hqv9-qc97 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.