CVSS Score of 10 (low)


Published Jul 7, 2023
Updated: Jan 25, 2024


CVE-2023-37269 is a vulnerability affecting Winter CMS, a free and open-source content management system based on the Laravel PHP framework. The vulnerability allows users with specific permissions to upload SVG files as the application logo without proper sanitization. This could lead to a stored cross-site scripting (XSS) attack. However, exploiting this vulnerability requires the attacker to already have developer or super user level access within Winter CMS and convince the victim to visit a malicious URL containing the uploaded SVG. The potential danger is limited because Winter CMS renders SVGs through an 'img' tag, preventing direct execution of payloads. Remediation for this vulnerability involves updating Winter CMS to version 1.2.3 or above, which includes the necessary sanitization of SVG uploads.

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