GHSA-j9rc-w3wv-fv62 is a critical-severity (CVSS 9.6) Cross-site Scripting (XSS) vulnerability in org.xwiki.platform:xwiki-platform-flamingo-skin-resources. 1 public exploit reference exists, so weaponization risk is real. A fix is available for org.xwiki.platform:xwiki-platform-flamingo-skin-resources — see the affected versions and patch details below.
XWiki Platform vulnerable to reflected cross-site scripting through revision parameter in content menu
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-j9rc-w3wv-fv62.
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-j9rc-w3wv-fv62 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-flamingo-skin-resources☕org.xwiki.platform:xwiki-platform-flamingo-skin-resourcesReal-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
XWiki is vulnerable to reflected cross-site scripting (RXSS) via the rev parameter that is used in the content of the content menu without escaping. If an attacker can convince a user to visit a link with a crafted parameter, this allows the attacker to execute arbitrary actions in the name of the user, including remote code (Groovy) execution in the case of a user with programming right, compromising the confidentiality, integrity and availability of the whole XWiki installation.
The vulnerability can be demonstrated by opening <xwiki-host>/xwiki/bin/view/Main/?rev=xar%3Aorg.xwiki.platform%3Axwiki-platform-distribution-flavor-common%2F15.5%25%25%22%3e%3cscript%3ealert(1)%3c%2fscript%3e where <xwiki-host> is the URL of your XWiki installation. If an alert is displayed, the installation is vulnerable.
Patches
This has been patched in XWiki 15.6 RC1, 15.5.1 and 14.10.14.
Workarounds
The patch can be manually applied without upgrading (or restarting) the instance.
References
- https://jira.xwiki.org/browse/XWIKI-21095
- https://github.com/xwiki/xwiki-platform/commit/04e325d57d4bcb6ab79bddcafbb19032474c2a55
Attribution
We thank Agostino Parentela, Vulnerability Management Engineer of TicketOne S.p.A., [email protected] for reporting this vulnerability.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.xwiki.platform:xwiki-platform-flamingo-skin-resources | ≥ 9.7-rc-1&&< 14.10.14 | 14.10.14org.xwiki.platform:xwiki-platform-flamingo-skin-resources:14.10.14 |
| ☕Maven | org.xwiki.platform:xwiki-platform-flamingo-skin-resources | ≥ 15.0-rc-1&&< 15.5.1 | 15.5.1org.xwiki.platform:xwiki-platform-flamingo-skin-resources:15.5.1 |
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-flamingo-skin-resources, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.xwiki.platform:xwiki-platform-flamingo-skin-resources to 14.10.14 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-j9rc-w3wv-fv62 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-j9rc-w3wv-fv62 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-j9rc-w3wv-fv62. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
How to detect GHSA-j9rc-w3wv-fv62
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id ghsa-j9rc-w3wv-fv62 -u https://target- Template
- XWiki < 14.10.14 - Cross-Site Scripting
- Severity
- medium
- Impact
- Successful exploitation could lead to cross-site scripting attack.
- Remediation
- This has been patched in XWiki 15.6 RC1, 15.5.1 and 14.10.14.
Template by ProjectDiscovery nuclei-templates (ritikchaddha), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is GHSA-j9rc-w3wv-fv62 in your dependencies?
O3 Security finds GHSA-j9rc-w3wv-fv62 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.