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...

CVE-2026-45572 Decidim: HTML content blocks allow stored script execution

Decidim is a participatory democracy framework. Prior to 0.30.9, from 0.31.0 before 0.31.5, and in 0.32.0.rc1 before 0.32.0.rc2, an administrator with landing-page editing privileges can store arbitrary HTML and JavaScript in an HTML content block, which Decidim::ContentBlocks::HtmlCellhtmlconten...

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...