CVE-2019-12245
MEDIUMCVE-2019-12245 is a medium-severity (CVSS 5.3) CWE-732 vulnerability in silverstripe/framework. O3 Security confirms whether CVE-2019-12245 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Lack of access control on upoaded files
Blast Radius
silverstripe/framework🐘silverstripe/framework🐘silverstripe/framework🐘silverstripe/framework🐘silverstripe/assets🐘silverstripe/assetsReal-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
SilverStripe through 4.3.3 has incorrect access control for protected files uploaded via Upload::loadIntoFile(). An attacker may be able to guess a filename in silverstripe/assets via the AssetControlExtension.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | silverstripe/framework | all versions | 3.6.8 |
| 🐘Packagist | silverstripe/framework | ≥ 3.7.0&&< 3.7.4 | 3.7.4 |
| 🐘Packagist | silverstripe/framework | ≥ 4.0.0&&< 4.3.6 | 4.3.6 |
| 🐘Packagist | silverstripe/framework | ≥ 4.4.0&&< 4.4.4 | 4.4.4 |
| 🐘Packagist | silverstripe/assets | ≥ 1.0.0&&< 1.3.5 | 1.3.5 |
| 🐘Packagist | silverstripe/assets | ≥ 1.4.0&&< 1.4.4 | 1.4.4 |
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 3.6.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-12245 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 CVE-2019-12245 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 CVE-2019-12245. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2019-12245 in your dependencies?
O3 detects CVE-2019-12245 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.