GHSA-f43j-8hq4-2xj9
silverstripe/framework uploaded PHP script execution in assets
Blast Radius
silverstripe/framework🐘silverstripe/frameworkReal-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
A weakness in the .htaccess rules preventing requests to uploaded PHP scripts allows PHP scripts that had made their way into the assets directory to be successfully executed through the use of a specially crafted URL. There are protections in place to disallow upload of PHP scripts through the CMS, meaning this weakness does not lead to direct vulnerabilities.
In addition, sites hosted on the New Zealand Common Web Platform or SilverStripe Platform have additional configuration in place which prevents PHP script execution in assets, even in a malicious party manages to upload these into the folder.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | silverstripe/framework | ≥ 4.0.0-rc1&&< 4.0.4 | 4.0.4 |
| 🐘Packagist | silverstripe/framework | ≥ 4.1.0-rc1&&< 4.1.1 | 4.1.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for silverstripe/framework. 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 silverstripe/framework to 4.0.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-f43j-8hq4-2xj9 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-f43j-8hq4-2xj9 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-f43j-8hq4-2xj9. 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-f43j-8hq4-2xj9 in your dependencies?
O3 detects GHSA-f43j-8hq4-2xj9 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.