# winter/wn-backend-module (Packagist) vulnerabilities

Source: https://junglewise.ai/threats/technologies/winter-wn-backend-module  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/winter-wn-backend-module.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 15 vulnerabilities in winter/wn-backend-module (Packagist): 0 in the last 7 days and 12 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-63179, was published on 26 August 2026. Nothing was published in the last eight weeks.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 12
- All time: 15 (0 critical, 0 exploited in the wild)

## About winter/wn-backend-module (Packagist)

A Composer package providing the backend administrative functionality for the Winter CMS platform.

## Latest winter/wn-backend-module (Packagist) vulnerabilities

- [CVE-2026-63179: Winter CMS local file inclusion via LESS @import directives](https://junglewise.ai/threats/cve-2026-63179-winter-cms-local-file-inclusion-via-less-import-directives) (medium, CVSS 4.9, published 26 Aug 2026)
- [CVE-2026-54256: Winter CMS FileUpload widget IDOR in attachment metadata](https://junglewise.ai/threats/cve-2026-54256-winter-cms-fileupload-widget-idor-in-attachment-metadata) (medium, CVSS 5.4, published 26 Aug 2026)
- [CVE-2026-32593: Winter CMS SQL injection in Backend Filter Widget numberrange scope](https://junglewise.ai/threats/cve-2026-32593-winter-cms-sql-injection-in-backend-filter-widget-numberrange) (medium, CVSS 5.9, published 26 Aug 2026)
- [CVE-2026-35445: Winter CMS authorization bypass in Users controller](https://junglewise.ai/threats/cve-2026-35445-winter-cms-authorization-bypass-in-users-controller) (high, CVSS 4, published 26 Aug 2026)
- [CVE-2026-32258: Winter CMS stored XSS in Editor Settings custom styles](https://junglewise.ai/threats/cve-2026-32258-winter-cms-stored-xss-in-editor-settings-custom-styles) (high, CVSS 8.1, published 26 Aug 2026)
- [CVE-2026-32257: Winter CMS stored XSS in Brand Settings custom styles](https://junglewise.ai/threats/cve-2026-32257-winter-cms-stored-xss-in-brand-settings-custom-styles) (high, CVSS 8.1, published 26 Aug 2026)
- [Winter CMS reflected XSS in backend Table widget search parameter](https://junglewise.ai/threats/winter-cms-reflected-xss-in-backend-table-widget-search-parameter-37a9f453) (medium, CVSS 4.5, published 20 Aug 2026)
- [Winter CMS CSRF through backend page action routing](https://junglewise.ai/threats/winter-cms-csrf-through-backend-page-action-routing-63f3a65d) (medium, CVSS 6.1, published 20 Aug 2026)
- [Winter Backend Module stored XSS in cached styles](https://junglewise.ai/threats/winter-backend-module-stored-xss-in-cached-styles-3dde5f4d) (medium, CVSS 4.5, published 20 Aug 2026)
- [Winter CMS ImportExportController AJAX handlers permission bypass](https://junglewise.ai/threats/winter-cms-importexportcontroller-ajax-handlers-permission-bypass-ac8bbb08) (high, CVSS 8.3, published 20 Aug 2026)
- [Winter backend user profile information disclosure via MyAccount controller](https://junglewise.ai/threats/winter-backend-user-profile-information-disclosure-via-myaccount-d7c5a5b1) (medium, CVSS 4.3, published 20 Aug 2026)
- [Winter Backend List widget stored XSS in image columns](https://junglewise.ai/threats/winter-backend-list-widget-stored-xss-in-image-columns-e56efd1b) (low, CVSS 2, published 20 Aug 2026)
- [CVE-2026-27591: Winter vulnerable to privilege escalation by authenticated backend users](https://junglewise.ai/threats/cve-2026-27591-winter-vulnerable-to-privilege-escalation-by-authenticated) (low, CVSS 3.1, published 12 Mar 2026)
- [CVE-2023-52085: Winter CMS Local File Inclusion through Server Side Template Injection](https://junglewise.ai/threats/cve-2023-52085-winter-cms-local-file-inclusion-through-server-side-template) (low, CVSS 3.1, published 2 Jan 2024)
- [CVE-2023-52084: Winter CMS Stored XSS through Backend ColorPicker FormWidget](https://junglewise.ai/threats/cve-2023-52084-winter-cms-stored-xss-through-backend-colorpicker-formwidget) (low, CVSS 3.1, published 28 Dec 2023)

## Most severe winter/wn-backend-module (Packagist) vulnerabilities

- [Winter CMS ImportExportController AJAX handlers permission bypass](https://junglewise.ai/threats/winter-cms-importexportcontroller-ajax-handlers-permission-bypass-ac8bbb08) (high, CVSS 8.3, published 20 Aug 2026)
- [CVE-2026-32258: Winter CMS stored XSS in Editor Settings custom styles](https://junglewise.ai/threats/cve-2026-32258-winter-cms-stored-xss-in-editor-settings-custom-styles) (high, CVSS 8.1, published 26 Aug 2026)
- [CVE-2026-32257: Winter CMS stored XSS in Brand Settings custom styles](https://junglewise.ai/threats/cve-2026-32257-winter-cms-stored-xss-in-brand-settings-custom-styles) (high, CVSS 8.1, published 26 Aug 2026)
- [CVE-2026-35445: Winter CMS authorization bypass in Users controller](https://junglewise.ai/threats/cve-2026-35445-winter-cms-authorization-bypass-in-users-controller) (high, CVSS 4, published 26 Aug 2026)
- [Winter CMS CSRF through backend page action routing](https://junglewise.ai/threats/winter-cms-csrf-through-backend-page-action-routing-63f3a65d) (medium, CVSS 6.1, published 20 Aug 2026)
- [CVE-2026-32593: Winter CMS SQL injection in Backend Filter Widget numberrange scope](https://junglewise.ai/threats/cve-2026-32593-winter-cms-sql-injection-in-backend-filter-widget-numberrange) (medium, CVSS 5.9, published 26 Aug 2026)
- [CVE-2026-54256: Winter CMS FileUpload widget IDOR in attachment metadata](https://junglewise.ai/threats/cve-2026-54256-winter-cms-fileupload-widget-idor-in-attachment-metadata) (medium, CVSS 5.4, published 26 Aug 2026)
- [CVE-2026-63179: Winter CMS local file inclusion via LESS @import directives](https://junglewise.ai/threats/cve-2026-63179-winter-cms-local-file-inclusion-via-less-import-directives) (medium, CVSS 4.9, published 26 Aug 2026)
- [Winter CMS reflected XSS in backend Table widget search parameter](https://junglewise.ai/threats/winter-cms-reflected-xss-in-backend-table-widget-search-parameter-37a9f453) (medium, CVSS 4.5, published 20 Aug 2026)
- [Winter Backend Module stored XSS in cached styles](https://junglewise.ai/threats/winter-backend-module-stored-xss-in-cached-styles-3dde5f4d) (medium, CVSS 4.5, published 20 Aug 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 6 | 0 | 0 |
| 24 Aug 2026 | 6 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

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- [typo3/cms-core (Packagist)](https://junglewise.ai/threats/technologies/typo3-cms-core): 127 vulnerabilities
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## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "winter/wn-backend-module (Packagist) vulnerabilities", https://junglewise.ai/threats/technologies/winter-wn-backend-module, 9 November 2026.