CVE-2026-32593: Winter SQL Injection Vulnerability

MODERATE
Advisory Identifier: GHSA-m7jc-g4rc-jmvh
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CVSS 5.9
CWE-89
Published
Advisory Summary

CVE-2026-32593 is a MODERATE (CVSS 5.9) sql injection vulnerability (CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')) affecting Winter libraries in the Packagist ecosystem. The issue involves sql injection in backend filter widget numberrange scope via numbersfromajax. Remediation is available by upgrading affected packages to version 1.2.13.

CVE-2026-32593 at a Glance

CVE Identifier CVE-2026-32593
GHSA Identifier GHSA-m7jc-g4rc-jmvh
Severity MODERATE
CVSS v3.1 Base Score 5.9
CWE Classification CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Affected Product Winter
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.9

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-32593

To remediate this vulnerability, upgrade all affected Winter dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

winter/wn-backend-module fixed: 1.2.13 
Upgrade winter/wn-backend-module to 1.2.13
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for winter/wn-backend-module

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-32593, inspect your project dependencies for Winter:

inspect dependencies for winter/wn-backend-module

Analyze the terminal output to locate any version of Winter in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.2.13), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'), where the product constructs all or part of an sql command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended sql command when it is sent to a downstream component. without sufficient removal or quoting of sql syntax in user-controllable inputs, the generated sql query can cause those inputs to be interpreted as sql instead of ordinary user data. In Winter, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## 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.

CVE-2026-32593 Affected Winter Versions

1 component(s)
Fixed Versions:
1.2.13
Product / Package Ecosystem Affected Versions Fixed Version
winter/wn-backend-module
 Packagist
< 1.2.13
1.2.13

References

GitHub Advisory / Wiki ADVISORY
https://github.com/wintercms/winter/security/advisories/GHSA-m7jc-g4rc-jmvh
Security Fix Commit FIX COMMIT
https://github.com/wintercms/winter/commit/50713de95adf5298536d93f4d999652525d36d43
Winter Source Repository REPOSITORY
https://github.com/wintercms/winter

Frequently Asked Questions

What is CVE-2026-32593?
CVE-2026-32593 is a security vulnerability in Winter involving SQL Injection in Backend Filter Widget numberrange Scope via numbersFromAjax under CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection').
Which Winter versions are affected?
Affected versions include releases prior to 1.2.13 across affected packages: winter/wn-backend-module.
What version fixes CVE-2026-32593?
Upgrading to 1.2.13 (or the latest patched release for your respective branch) resolves the vulnerability.
Is winter/wn-backend-module affected?
Yes, winter/wn-backend-module is affected in releases prior to 1.2.13. Upgrade your dependency to 1.2.13 or later.
What is the CVSS score of CVE-2026-32593?
CVE-2026-32593 has a CVSS v3.1 base score of 5.9 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N.
What CWE is associated with CVE-2026-32593?
CVE-2026-32593 is classified under CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') (The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.).
How can I check Packagist dependencies for CVE-2026-32593?
Run the dependency tree command: 'inspect dependencies for winter/wn-backend-module'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-m7jc-g4rc-jmvh",
  "modified" : "2026-08-12T14:41:13Z",
  "published" : "2026-08-12T14:41:13Z",
  "aliases" : [ "CVE-2026-32593" ],
  "summary" : "Winter: SQL Injection in Backend Filter Widget numberrange Scope via numbersFromAjax",
  "details" : "## Impact\n\nThe 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.\n\nTo 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.\n\n## Patches\n\nThis issue has been fixed in Winter CMS v1.2.13.\n\n## Workarounds\n\nIf users cannot upgrade, they may apply commit https://github.com/wintercms/winter/commit/50713de95adf5298536d93f4d999652525d36d43 to your Winter CMS\ninstallation manually to resolve this issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "winter/wn-backend-module"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.2.13"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.2.12"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/wintercms/winter/security/advisories/GHSA-m7jc-g4rc-jmvh"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/wintercms/winter/commit/50713de95adf5298536d93f4d999652525d36d43"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/wintercms/winter"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-89" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-12T14:41:13Z",
    "nvd_published_at" : null
  }
}