Summary
silverstripe/framework uploaded PHP script execution in assets
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.
Impact
The application does not adequately validate input before processing it, allowing unexpected values to reach sensitive code paths. Typical impact: varies by context: data corruption, logic bypass, or denial of service.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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silverstripe/framework to 4.0.4 or later; silverstripe/framework to 4.1.1 or later
Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
Frequently Asked Questions
- What is GHSA-F43J-8HQ4-2XJ9? GHSA-F43J-8HQ4-2XJ9 is a medium-severity improper input validation vulnerability in silverstripe/framework (composer), affecting versions >= 4.0.0-rc1, < 4.0.4. It is fixed in 4.0.4, 4.1.1. The application does not adequately validate input before processing it, allowing unexpected values to reach sensitive code paths.
- Which versions of silverstripe/framework are affected by GHSA-F43J-8HQ4-2XJ9? silverstripe/framework (composer) versions >= 4.0.0-rc1, < 4.0.4 is affected.
- Is there a fix for GHSA-F43J-8HQ4-2XJ9? Yes. GHSA-F43J-8HQ4-2XJ9 is fixed in 4.0.4, 4.1.1. Upgrade to this version or later.
- Is GHSA-F43J-8HQ4-2XJ9 exploitable, and should I be worried? Whether GHSA-F43J-8HQ4-2XJ9 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether GHSA-F43J-8HQ4-2XJ9 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix GHSA-F43J-8HQ4-2XJ9?
- Upgrade
silverstripe/frameworkto 4.0.4 or later - Upgrade
silverstripe/frameworkto 4.1.1 or later
- Upgrade