Vulnerability Description
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the CalDAV output generator builds iCalendar VTODO entries via raw string concatenation without applying RFC 5545 TEXT value escaping. User-controlled task titles containing CRLF characters break the iCalendar property boundary, allowing injection of arbitrary iCalendar properties such as ATTACH, VALARM, or ORGANIZER. 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/pull/2580Issue Tracking
- https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0Release Notes
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4rExploitVendor Advisory
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4rExploitVendor Advisory
FAQ
What is CVE-2026-35601?
CVE-2026-35601 is a vulnerability with a CVSS score of 4.1 (MEDIUM). Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the CalDAV output generator builds iCalendar VTODO entries via raw string concatenation without applying RFC 5545 TEXT v...
How severe is CVE-2026-35601?
CVE-2026-35601 has been rated MEDIUM with a CVSS base score of 4.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-35601?
Check the references section above for vendor advisories and patch information. Affected products include: Vikunja Vikunja.