Packagist Package Vulnerabilities
Vulnerabilities associated with winter/wn-backend-module.
Packages
Clear package- moodle/moodle437 vulnerabilities
- magento/community-edition362 vulnerabilities
- typo3/cms188 vulnerabilities
- magento/project-community-edition161 vulnerabilities
- wwbn/avideo144 vulnerabilities
- pimcore/pimcore132 vulnerabilities
- craftcms/cms128 vulnerabilities
- typo3/cms-core127 vulnerabilities
- dolibarr/dolibarr126 vulnerabilities
- concrete5/concrete5119 vulnerabilities
- drupal/core109 vulnerabilities
- phpmyadmin/phpmyadmin107 vulnerabilities
- thorsten/phpmyfaq106 vulnerabilities
- microweber/microweber105 vulnerabilities
- librenms/librenms101 vulnerabilities
- symfony/symfony100 vulnerabilities
- silverstripe/framework90 vulnerabilities
- drupal/drupal81 vulnerabilities
- mantisbt/mantisbt74 vulnerabilities
- shopware/platform74 vulnerabilities
- getgrav/grav69 vulnerabilities
- shopware/core65 vulnerabilities
- snipe/snipe-it57 vulnerabilities
- baserproject/basercms56 vulnerabilities
- mautic/core56 vulnerabilities
| Vulnerability | Title and context | CVSS | EPSS | PoCs | Signals | STIX action |
|---|---|---|---|---|---|---|
Winter: Authenticated backend users can bypass Users controller permission checks### Impact Affected versions of Winter CMS did not validate the handler name submitted through the form postback mechanism (`_handler` POST field) in the same way as AJAX requests (`X_WINTER_REQUEST_HANDLER` header). The AJAX path validates that handler names match the `on[A-Z][\w+]*` pattern, but the postback path passed the handler name directly to the handler dispatcher with no validation. This allowed an authenticated backend user to call any method on a controller — including action-prefi… | CVSS-v4.0 | EPSS- | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX | |
Winter: SQL Injection in Backend Filter Widget numberrange Scope via numbersFromAjax## 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 th… CWE-89Aug 12, 2026 | CVSS-v3.1 | EPSS- | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX | |
Winter: Stored XSS through Editor Settings custom styles### Impact Authenticated Backend Users with the `backend.manage_editor` ("Manage editor settings") permission can provide custom styles through **Settings → Editor Settings → Markup Styles** that are compiled through the LESS CSS parser and rendered on every backend page. Previous… CWE-79Aug 12, 2026 | CVSS-v3.1 | EPSS- | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX | |
Winter: Stored XSS through Brand Settings custom styles### Impact Users with the `backend.manage_branding` ("Customize the back-end") permission can provide custom CSS through **Settings → Customize Backend → Styles** that is compiled through the LESS CSS parser and rendered on every backend page. Previously, the compiled output was not sanitized, which could have allowed a stored XSS attack. Although this is a valid security issue, it's importan… CWE-79Aug 12, 2026 | CVSS-v3.1 | EPSS- | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX | |
CVE-2026-27591CRITICAL | Winter: Privilege escalation by authenticated backend usersWinter is a free, open-source content management system (CMS) based on the Laravel PHP framework. Prior to 1.0.477, 1.1.12, and 1.2.12, Winter CMS allowed authenticated backend users to escalate their accounts level of access to the system by modifying the roles / permissions assigned to their account through specially crafted requests to the backend while logged in. To actively exploit this security issue, an attacker would need access to the Backend with a user account with any level of access… | CVSS10.0v3.1 | EPSS0.486% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |
Winter CMS Local File Inclusion through Server Side Template InjectionWinter is a free, open-source content management system. Users with access to backend forms that include a ColorPicker FormWidget can provide a value that would then be included without further processing in the compilation of custom stylesheets via LESS. This had the potential to lead to a Local File Inclusion vulnerability. This issue has been patched in v1.2.4. | CVSS3.3v3.1 | EPSS30.2% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware use1 Nuclei template | STIX | |
Winter CMS Stored XSS through Backend ColorPicker FormWidgetWinter is a free, open-source content management system. Prior to 1.2.4, Users with access to backend forms that include a ColorPicker FormWidget can provide a value that would then be rendered unescaped in the backend form, potentially allowing for a stored XSS attack. This issue has been patched in v1.2.4. CWE-79Dec 28, 2023 | CVSS2.0v3.1 | EPSS0.309% | PoCs0 | SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templates | STIX |