CVE-2019-6341
MEDIUMCVE-2019-6341 is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in drupal/core. O3 Security confirms whether CVE-2019-6341 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Drupal Cross Site Scripting (XSS) vulnerability
Blast Radius
drupal/core🐘drupal/core🐘drupal/core🐘drupal/drupal🐘drupal/drupal🐘drupal/drupalReal-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
In Drupal 7 versions prior to 7.65; Drupal 8.6 versions prior to 8.6.13;Drupal 8.5 versions prior to 8.5.14. Under certain circumstances the File module/subsystem allows a malicious user to upload a file that can trigger a cross-site scripting (XSS) vulnerability.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | drupal/core | ≥ 7.0.0&&< 7.65.0 | 7.65.0 |
| 🐘Packagist | drupal/core | ≥ 8.0.0&&< 8.5.14 | 8.5.14 |
| 🐘Packagist | drupal/core | ≥ 8.6.0&&< 8.6.13 | 8.6.13 |
| 🐘Packagist | drupal/drupal | ≥ 7.0.0&&< 7.65.0 | 7.65.0 |
| 🐘Packagist | drupal/drupal | ≥ 8.0.0&&< 8.5.14 | 8.5.14 |
| 🐘Packagist | drupal/drupal | ≥ 8.6.0&&< 8.6.13 | 8.6.13 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for drupal/core. 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 drupal/core to 7.65.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-6341 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-2019-6341 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-2019-6341. 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-2019-6341 in your dependencies?
O3 detects CVE-2019-6341 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.