CVE-2026-35600

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.

• CWE-79

• https://github.com/go-vikunja/vikunja/commit/0f3730d045f20e261e3cdfc6d93c325653395b64Patch
• https://github.com/go-vikunja/vikunja/pull/2580Issue Tracking
• https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0Release Notes
• https://github.com/go-vikunja/vikunja/security/advisories/GHSA-45q4-x4r9-8fqjExploit, Vendor Advisory

Published

Apr 10, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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