GHSA-m8v7-x398-pxrf is a medium-severity (CVSS 6.1) vulnerability in silverstripe/framework. A fix is available for silverstripe/framework — see the affected versions and patch details below.
Silverstripe XSS in CMS Edit Page
Real-World Exposure
silverstripe/framework🐘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
Due to a lack of parameter sanitisation a carefully crafted URL could be used to inject arbitrary HTML into the CMS Edit page.
An attacker could create a URL and share it with a site administrator to perform an attack.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | silverstripe/framework | ≥ 3.1.18&&< 3.1.19 | 3.1.19composer require silverstripe/framework:^3.1.19 |
| 🐘Packagist | silverstripe/framework | ≥ 3.2.3&&< 3.2.4 | 3.2.4composer require silverstripe/framework:^3.2.4 |
| 🐘Packagist | silverstripe/framework | ≥ 3.3.1&&< 3.3.2 | 3.3.2composer require silverstripe/framework:^3.3.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for silverstripe/framework, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update silverstripe/framework to 3.1.19 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-m8v7-x398-pxrf 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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-m8v7-x398-pxrf can be triaged on real exposure rather than presence alone.
Tailored to GHSA-m8v7-x398-pxrf. 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-m8v7-x398-pxrf in your dependencies?
O3 Security finds GHSA-m8v7-x398-pxrf across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.