GHSA-wm86-w3cf-h6vm
MEDIUMGHSA-wm86-w3cf-h6vm is a medium-severity (CVSS 4.7) Open Redirect vulnerability in drupal/core. O3 Security confirms whether GHSA-wm86-w3cf-h6vm is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Drupal external link injection vulnerability
Real-World Exposure
drupal/core🐘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
Drupal core 7.x versions before 7.57 has an external link injection vulnerability when the language switcher block is used. A similar vulnerability exists in various custom and contributed modules. This vulnerability could allow an attacker to trick users into unwillingly navigating to an external site.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | drupal/core | ≥ 7.0&&< 7.57 | 7.57 |
| 🐘Packagist | drupal/drupal | ≥ 7.0&&< 7.57 | 7.57 |
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 7.57 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-wm86-w3cf-h6vm 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 GHSA-wm86-w3cf-h6vm 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 GHSA-wm86-w3cf-h6vm. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-wm86-w3cf-h6vm in your dependencies?
O3 detects GHSA-wm86-w3cf-h6vm across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.