GHSA-4x5r-6v26-7j4v
HIGHCreation of new database tables through login form on PostgreSQL
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-oldcore☕org.xwiki.platform:xwiki-platform-oldcore☕org.xwiki.platform:xwiki-platform-oldcoreReal-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
It's possible to make XWiki create many new schemas and fill them with tables just by using a crafted user identifier in the login form.
Patches
The problem has been patched in XWiki 13.10.8, 14.6RC1 and 14.4.2.
Workarounds
The only workarounds for this are:
- use an authenticator which does interpret the login as a reference to a document
- using a different database than PostgreSQL
- upgrade XWiki
References
https://jira.xwiki.org/browse/XWIKI-19886
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
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.xwiki.platform:xwiki-platform-oldcore | all versions | 13.10.8 |
| ☕Maven | org.xwiki.platform:xwiki-platform-oldcore | ≥ 14.0.0&&< 14.4.2 | 14.4.2 |
| ☕Maven | org.xwiki.platform:xwiki-platform-oldcore | ≥ 14.5.0&&< 14.6-rc-1 | 14.6-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-oldcore. 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-oldcore to 13.10.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-4x5r-6v26-7j4v 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-4x5r-6v26-7j4v 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-4x5r-6v26-7j4v. 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-4x5r-6v26-7j4v in your dependencies?
O3 detects GHSA-4x5r-6v26-7j4v across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.