Threats tagged 'ghsa-533c-2vh9-4r86'

A stored cross-site scripting (XSS) vulnerability exists in Decidim core versions prior to 0.30.9. A privileged admin user who can edit landing pages can inject arbitrary HTML and JavaScript into an HTML content block. This content is rendered without sanitization, allowing script execution in visitors' browsers. Exploitation requires admin-level permissions, reducing practical risk compared to participant-controlled or unauthenticated XSS. A patch is available in Decidim version 0.30.9.