CVE-2026-45572

CVE-2026-45572 affects Decidim: HTML content blocks allow stored script execution. An administrator with landing-page editing rights can store arbitrary HTML/JavaScript in an HTML content block, which is rendered without sanitization by Decidim::ContentBlocks::HtmlCell#html_content, leading to sc...

Decidim: HTML content blocks allow stored script execution

Description A privileged admin user who can edit an affected landing page can store arbitrary HTML/JavaScript in an HTML block, and the public page renders it with htmlsafe and no output escaping. Technical description This issue lets any admin who can edit an affected landing page store arbitrar...