GHSA-cwgq-83w5-8jfq is a high-severity (CVSS 7.5) vulnerability in silverstripe/framework. A fix is available for silverstripe/framework — see the affected versions and patch details below.
silverstripe/framework has possible denial of service attack vector when flushing
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
A possible denial of service attack vector has been identified in the dev/build system controller.
dev/build now has its own URL token, similar to flushtoken, to ensure users are authenticated when running dev/build outside of dev environments.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | silverstripe/framework | ≥ 4.0.0-rc1&&< 4.0.5 | 4.0.5composer require silverstripe/framework:^4.0.5 |
| 🐘Packagist | silverstripe/framework | ≥ 4.1.0-rc1&&< 4.1.3 | 4.1.3composer require silverstripe/framework:^4.1.3 |
| 🐘Packagist | silverstripe/framework | ≥ 4.2.0-rc1&&< 4.2.2 | 4.2.2composer require silverstripe/framework:^4.2.2 |
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 4.0.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-cwgq-83w5-8jfq 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-cwgq-83w5-8jfq can be triaged on real exposure rather than presence alone.
Tailored to GHSA-cwgq-83w5-8jfq. 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-cwgq-83w5-8jfq in your dependencies?
O3 Security finds GHSA-cwgq-83w5-8jfq across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.