GHSA-fwwj-wg89-7h4c is a high-severity (CVSS 8.8) Cross-site Scripting (XSS) vulnerability in org.xwiki.platform:xwiki-platform-sharepage-api. 1 public exploit reference exists, so weaponization risk is real. A fix is available for org.xwiki.platform:xwiki-platform-sharepage-api — see the affected versions and patch details below.
XWiki Platform vulnerable to cross-site scripting in target parameter via share page by email
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.
Exploitation and automatability from CISA’s SSVC triage for GHSA-fwwj-wg89-7h4c.
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-fwwj-wg89-7h4c 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-sharepage-api☕org.xwiki.platform:xwiki-platform-sharepage-apiReal-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
Users are able to forge an URL with a payload allowing to inject Javascript in the page (XSS).
For instance, the following URL execute an alter on the browser: <xwiki-host>/xwiki/bin/view/Main/?viewer=share&send=1&target=&target=%3Cimg+src+onerror%3Dalert%28document.domain%29%3E+%3Cimg+src+onerror%3Dalert%28document.domain%29%3E+%3Crenniepak%40intigriti.me%3E&includeDocument=inline&message=I+wanted+to+share+this+page+with+you., where <xwiki-host> is the URL of your XWiki installation.
See https://jira.xwiki.org/browse/XWIKI-20370 for me details.
Patches
The vulnerability has been patched in XWiki 15.0-rc-1, 14.10.4, and 14.4.8.
Workarounds
The fix is only impacting Velocity templates and page contents, so applying this patch is enough to fix the issue.
References
https://jira.xwiki.org/browse/XWIKI-20370
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-sharepage-api | ≥ 2.6-rc-2&&< 14.4.8 | 14.4.8org.xwiki.platform:xwiki-platform-sharepage-api:14.4.8 |
| ☕Maven | org.xwiki.platform:xwiki-platform-sharepage-api | ≥ 14.5&&< 14.10.4 | 14.10.4org.xwiki.platform:xwiki-platform-sharepage-api:14.10.4 |
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-sharepage-api, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.xwiki.platform:xwiki-platform-sharepage-api to 14.4.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-fwwj-wg89-7h4c 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-fwwj-wg89-7h4c can be triaged on real exposure rather than presence alone.
Tailored to GHSA-fwwj-wg89-7h4c. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
How to detect GHSA-fwwj-wg89-7h4c
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id ghsa-fwwj-wg89-7h4c -u https://target- Template
- XWiki - Cross-Site Scripting
- Severity
- medium
- Impact
- Successful exploitation could lead to unauthorized access to sensitive information or account takeover
- Remediation
- Apply the latest security patches provided by XWiki to mitigate the vulnerability
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-fwwj-wg89-7h4c in your dependencies?
O3 Security finds GHSA-fwwj-wg89-7h4c across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.