Summary
Winter: SQL Injection in Backend Filter Widget numberrange Scope via numbersFromAjax
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.
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.
Untrusted input alters a database query, allowing the attacker to read or modify data the query was not intended to access. Typical impact: data disclosure or modification.
CVE-2026-32593 has a CVSS score of 5.9 (Medium). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.2.13); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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This issue has been fixed in Winter CMS v1.2.13.
Frequently Asked Questions
- What is CVE-2026-32593? CVE-2026-32593 is a medium-severity SQL injection vulnerability in winter/wn-backend-module (composer), affecting versions <= 1.2.12. It is fixed in 1.2.13. Untrusted input alters a database query, allowing the attacker to read or modify data the query was not intended to access.
- How severe is CVE-2026-32593? CVE-2026-32593 has a CVSS score of 5.9 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of winter/wn-backend-module are affected by CVE-2026-32593? winter/wn-backend-module (composer) versions <= 1.2.12 is affected.
- Is there a fix for CVE-2026-32593? Yes. CVE-2026-32593 is fixed in 1.2.13. Upgrade to this version or later.
- Is CVE-2026-32593 exploitable, and should I be worried? Whether CVE-2026-32593 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2026-32593 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2026-32593? Upgrade
winter/wn-backend-moduleto 1.2.13 or later.