PT-2026-76556

Name of the Vulnerable Software and Affected Versions Winter CMS versions prior to 1.2.13 Description An issue exists where the backend fails to validate the handler name submitted via the handler POST field during form postbacks. While AJAX requests are validated against the onA-Zw+ pattern, the...

PT-2026-76553

Name of the Vulnerable Software and Affected Versions Winter versions 1.2.10 through 1.2.12 Description Authenticated backend users with the backend.manage editor permission can store custom Markup Styles via Settings → Editor Settings → Markup Styles. These styles are compiled by the LESS parser...

PT-2026-76552

Name of the Vulnerable Software and Affected Versions Winter versions prior to 1.2.13 Description Custom CSS provided through the Brand Settings Styles field is compiled by the LESS parser and rendered without sanitization on every backend page. This allows a user with the backend.manage branding...

PT-2026-76554

Name of the Vulnerable Software and Affected Versions Winter CMS versions prior to 1.2.13 Description Theme Editor AJAX handlers in the CMS section do not enforce per-template-type permission checks. While the CMS controller CmsControllersIndex uses OR-logic across five permissions cms.manage...

CVE-2026-27591

Winter 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...

PT-2026-25530

Name of the Vulnerable Software and Affected Versions Winter CMS affected versions not specified Description A security issue was identified in a Winter CMS plugin. The issue allows for unauthorized access or manipulation of the system, though specific details are not provided. No information is...

Winter vulnerable to privilege escalation by authenticated backend users

Impact Affected versions of 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...

EUVD-2026-11406

Winter vulnerable to privilege escalation by authenticated backend users...

GHSA-PGPF-M8M4-6CG6 Winter vulnerable to privilege escalation by authenticated backend users

Impact Affected versions of 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...

CVE-2026-27591

Winter 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...

CVE-2026-27591 Winter: Privilege escalation by authenticated backend users

Winter 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...

CVE-2026-27591 Winter: Privilege escalation by authenticated backend users

Winter 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...

CVE-2026-27591 Winter: Privilege escalation by authenticated backend users

Winter 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...

CVE-2026-22254

Winter is a free, open-source content management system CMS based on the Laravel PHP framework. Versions of Winter CMS before 1.2.10 allow users with access to the CMS Asset Manager were able to upload SVGs without automatic sanitization. To actively exploit this security issue, an attacker would...

CVE-2026-22254

Winter is a free, open-source content management system CMS based on the Laravel PHP framework. Versions of Winter CMS before 1.2.10 allow users with access to the CMS Asset Manager were able to upload SVGs without automatic sanitization. To actively exploit this security issue, an attacker would...

CVE-2026-22254 Winter Affected by Stored Cross-Site Scripting (XSS) in Asset Manager

Winter is a free, open-source content management system CMS based on the Laravel PHP framework. Versions of Winter CMS before 1.2.10 allow users with access to the CMS Asset Manager were able to upload SVGs without automatic sanitization. To actively exploit this security issue, an attacker would...

CVE-2026-22254

Winter is a free, open-source content management system CMS based on the Laravel PHP framework. Versions of Winter CMS before 1.2.10 allow users with access to the CMS Asset Manager were able to upload SVGs without automatic sanitization. To actively exploit this security issue, an attacker would...

CVE-2026-22254

CVE-2026-22254 affects Winter CMS prior to 1.2.10, where the Asset Manager allowed uploading SVGs without automatic sanitization if a user had cms.manage_assets. This could enable stored XSS in affected deployments, since the attacker must have backend access with that permission. The issue is fi...

Winter 安全漏洞

Winter is a free and open-source content management system developed using the Laravel PHP framework. Versions of Winter prior to 1.2.10 contained security vulnerabilities. These vulnerabilities stemmed from allowing users with access to the CMS resource manager to upload SVG files that were not...

Winter CMS has Stored Cross-site Scripting (XSS) in Asset Manager

Impact Affected versions of Winter CMS allow users with access to the CMS Asset Manager were able to upload SVGs without automatic sanitization. To actively exploit this security issue, an attacker would need access to the Backend with a user account with the following permission: cms.manageasset...