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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/go-vikunja/vikunja/commit/0f3730d045f20e261e3cdfc6d93c325653395b64 Patch
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-45q4-x4r9-8fqj Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.4 · vikunjaNVD modified 2026-10-26 21:10
Affected (CPE criteria) 1
cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*
References 4
- https://github.com/go-vikunja/vikunja/commit/0f3730d045f20e261e3cdfc6d93c325653395b64 Patch
- https://github.com/go-vikunja/vikunja/pull/2580 Issue Tracking
- https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0 Release Notes
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-45q4-x4r9-8fqj Exploit, Vendor Advisory