CVE-2019-18656 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in pimcore/pimcore. A fix is available for pimcore/pimcore — see the affected versions and patch details below.
Pimcore XSS Vulnerability
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
pimcore/pimcoreReal-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 6prior to 6.3.0 has XSS in the translations grid because bundles/AdminBundle/Resources/public/js/pimcore/settings/translations.js mishandles certain HTML elements.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | pimcore/pimcore | all versions | 6.3.0composer require pimcore/pimcore:^6.3.0 |
Affected Products
pimcorepimcoreDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for pimcore/pimcore, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update pimcore/pimcore to 6.3.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-18656 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.
Frequently Asked Questions
Is CVE-2019-18656 in your dependencies?
Find it across Packagist, including transitive dependencies.