CVE-2023-37280 is a medium-severity (CVSS 5) Cross-site Scripting (XSS) vulnerability in pimcore/admin-ui-classic-bundle. O3 Security confirms whether CVE-2023-37280 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Pimcore admin UI vulnerable to Cross-site Scripting in two factor authentication setup page
Real-World Exposure
pimcore/admin-ui-classic-bundleReal-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
Pimcore Admin Classic Bundle provides a Backend UI for Pimcore based on the ExtJS framework. An admin who has not setup two factor authentication before is vulnerable for this attack, without need for any form of privilege, causing the application to execute arbitrary scripts/HTML content. This vulnerability has been patched in version 1.0.3.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | pimcore/admin-ui-classic-bundle | all versions | 1.0.3 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for pimcore/admin-ui-classic-bundle. 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 pimcore/admin-ui-classic-bundle to 1.0.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-37280 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-2023-37280 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-2023-37280. 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-2023-37280 in your dependencies?
O3 detects CVE-2023-37280 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.