CVE-2026-32593 is a medium-severity (CVSS 5.9) vulnerability in winter/wn-backend-module. O3 Security confirms whether CVE-2026-32593 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Winter: SQL Injection in Backend Filter Widget numberrange Scope via numbersFromAjax
Real-World Exposure
winter/wn-backend-moduleReal-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
The Backend Filter widget (Backend\Widgets\Filter) is vulnerable to SQL injection through the numberrange scope type when the scope is configured with a conditions key. An authenticated backend user with access to a list view containing a vulnerable filter scope can inject arbitrary SQL via the filter's AJAX handler, potentially gaining read access to the full database contents.
To exploit this, an attacker must have a valid backend account with access to a list view where a third-party plugin has registered a numberrange filter scope using the conditions configuration key. No built-in Winter CMS backend views use this scope type and configuration combination, so a vanilla installation without plugins is not exploitable.
Patches
This issue has been fixed in Winter CMS v1.2.13.
Workarounds
If users cannot upgrade, they may apply commit https://github.com/wintercms/winter/commit/50713de95adf5298536d93f4d999652525d36d43 to your Winter CMS installation manually to resolve this issue.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | winter/wn-backend-module | all versions | 1.2.13 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for winter/wn-backend-module. 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 winter/wn-backend-module to 1.2.13 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-32593 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-2026-32593 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-2026-32593. 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-2026-32593 in your dependencies?
O3 detects CVE-2026-32593 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.