CVE-2026-35600 — Vikunja has HTML Injection via Task Titles in Overdue Email Notifications
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, task titles are embedded directly into Markdown link syntax in overdue email notifications withou…
Published: 2026-04-10 · CVSS: 5.4 · CVSS 3.1
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, task titles are embedded directly into Markdown link syntax in overdue email notifications without escaping Markdown special characters. When rendered by goldmark and sanitized by bluemonday (which allows <a> and <img> tags), injected Markdown constructs produce phishing links and tracking pixels in legitimate notification emails. This vulnerability is fixed in 2.3.0.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7