Medium severity4.1NVD Advisory· Published Apr 10, 2026· Updated Apr 17, 2026
CVE-2026-35601
CVE-2026-35601
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.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
code.vikunja.io/apiGo | < 2.3.0 | 2.3.0 |
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
5- github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4rnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-2g7h-7rqr-9p4rghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-35601ghsaADVISORY
- github.com/go-vikunja/vikunja/pull/2580nvdIssue TrackingWEB
- github.com/go-vikunja/vikunja/releases/tag/v2.3.0nvdRelease NotesWEB
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