Aggregates CVE and security vulnerability intelligence across all wintercms-related products, including CVSS, EPSS, publication dates, and vulnerability intelligence data.
Common weakness patterns include vendor risk cross-site scripting, vendor risk file inclusion, and vendor risk path handling, with potential vendor impact session compromise across vendor surface production workloads use cases.
| CVE | Summary | Source | Max CVSS | EPSS % | Published | Updated |
|---|---|---|---|---|---|---|
| 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 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 | [email protected] | 9.9 | 0.49% | 2026-03-11 | 2026-03-19 |
| 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 need access to the Backend with a user account with the following permission: cms.manage_assets. The Winter CMS maintainers strongly recommend that the cms.manage_assets permission only be reserved to | [email protected] | 0.0 | 0.25% | 2026-02-06 | 2026-02-20 |
| CVE-2024-54149 | Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework. Winter CMS prior to versions 1.2.7, 1.1.11, and 1.0.476 allow users with access to the CMS templates sections that modify Twig files to bypass the sandbox placed on Twig files and modify resources such as theme customisation values or modify, or remove, templates in the theme even if not provided direct access via the permissions. As all objects passed through to Twig are references to the live obje | [email protected] | 8.4 | 0.40% | 2024-12-09 | 2025-06-24 |
| CVE-2024-29686 | Server-side Template Injection (SSTI) vulnerability in Winter CMS v.1.2.3 allows a remote attacker to execute arbitrary code via a crafted payload to the CMS Pages field and Plugin components. NOTE: the vendor disputes this because the payload could only be entered by a trusted user, such as the owner of the server that hosts Winter CMS, or a developer working for them. | [email protected] | 7.2 | 1.82% | 2024-03-29 | 2025-05-28 |
| CVE-2023-52085 | Winter 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. | [email protected] | 3.3 | 30.17% | 2023-12-29 | 2024-11-21 |
| CVE-2023-52084 | Winter 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. | [email protected] | 2.0 | 0.32% | 2023-12-28 | 2024-11-21 |
| CVE-2023-52083 | Winter is a free, open-source content management system. Prior to 1.2.4, users with the `media.manage_media` permission can upload files to the Media Manager and rename them after uploading. Previously, media manager files were only sanitized on upload, not on renaming, which could have allowed a stored XSS attack. This issue has been patched in v1.2.4. | [email protected] | 2.0 | 0.31% | 2023-12-28 | 2024-11-21 |
| CVE-2023-37269 | Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework. Users with the `backend.manage_branding` permission can upload SVGs as the application logo. Prior to version 1.2.3, SVG uploads were not sanitized, which could have allowed a stored cross-site scripting (XSS) attack. To exploit the vulnerability, an attacker would already need to have developer or super user level permissions in Winter CMS. This means they would already have extensive access and co | [email protected] | 2.0 | 1.64% | 2023-07-07 | 2024-11-21 |
| CVE-2022-39357 | Winter is a free, open-source content management system based on the Laravel PHP framework. The Snowboard framework in versions 1.1.8, 1.1.9, and 1.2.0 is vulnerable to prototype pollution in the main Snowboard class as well as its plugin loader. The 1.0 branch of Winter is not affected, as it does not contain the Snowboard framework. This issue has been patched in v1.1.10 and v1.2.1. As a workaround, one may avoid this issue by following some common security practices for JavaScript, including | [email protected] | 8.1 | 1.03% | 2022-10-26 | 2024-11-21 |