Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vikunja | Vikunja | < 2.3.0 |
Related Weaknesses (CWE)
References
- https://github.com/go-vikunja/vikunja/commit/0f3730d045f20e261e3cdfc6d93c3256533Patch
- 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-x4r9-8fqjExploitVendor Advisory
FAQ
What is CVE-2026-35600?
CVE-2026-35600 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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 spe...
How severe is CVE-2026-35600?
CVE-2026-35600 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-35600?
Check the references section above for vendor advisories and patch information. Affected products include: Vikunja Vikunja.