Contao before 5.5.6 allows XSS via an SVG document. This affects (in contao/core-bundle in Composer) 4.x before 4.13.54, 5.0.x through 5.3.x before 5.3.30, and 5.4.x and 5.5..x before 5.5.6.
The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
Link | Tags |
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https://grimthereaperteam.medium.com/contao-5-4-1-malicious-file-upload-xss-in-svg-30edb8820ecb | exploit third party advisory |
https://contao.org/en/security-advisories/cross-site-scripting-through-svg-uploads | vendor advisory |