CVE-2019-11016
MEDIUMCVE-2019-11016 is a medium-severity (CVSS 6.1) Open Redirect vulnerability in elgg/elgg. O3 Security confirms whether CVE-2019-11016 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Elgg open redirect
Real-World Exposure
elgg/elgg🐘elgg/elggReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
Elgg before 1.12.18 and 2.3.x before 2.3.11 has an open redirect.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | elgg/elgg | all versions | 1.12.18 |
| 🐘Packagist | elgg/elgg | ≥ 2.3.0&&< 2.3.11 | 2.3.11 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for elgg/elgg. 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 elgg/elgg to 1.12.18 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-11016 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-2019-11016 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-2019-11016. 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-2019-11016 in your dependencies?
O3 detects CVE-2019-11016 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.