CVE-2023-5763
MEDIUMCVE-2023-5763 is a medium-severity (CVSS 6.8) Improper Input Validation vulnerability in org.glassfish.main.orb:orb-connector. O3 Security confirms whether CVE-2023-5763 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Glassfish remote code execution
Real-World Exposure
org.glassfish.main.orb:orb-connectorReal-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
In Eclipse Glassfish 5 or 6, running with old versions of JDK (lower than 6u211, or < 7u201, or < 8u191), allows remote attackers to load malicious code on the server via access to insecure ORB listeners.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.glassfish.main.orb:orb-connector | ≥ 5.0.0&&< 7.0.0 | 7.0.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.glassfish.main.orb:orb-connector. 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.glassfish.main.orb:orb-connector to 7.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-5763 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 CVE-2023-5763 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 CVE-2023-5763. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2023-5763 in your dependencies?
O3 detects CVE-2023-5763 across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.