GHSA-256q-hx8w-xcqx
MEDIUMSilverstripe Framework user enumeration via timing attack on login and password reset forms
Blast Radius
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
Impact
User enumeration is possible by performing a timing attack on the login or password reset pages with user credentials.
This was originally disclosed in https://www.silverstripe.org/download/security-releases/ss-2017-005/ for CMS 3 but was not patched in CMS 4+
References
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | silverstripe/framework | ≥ 4.0.0&&< 5.3.23 | 5.3.23 |
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 5.3.23 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-256q-hx8w-xcqx 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-256q-hx8w-xcqx 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-256q-hx8w-xcqx. 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-256q-hx8w-xcqx in your dependencies?
O3 detects GHSA-256q-hx8w-xcqx across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.