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.
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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
2Patches
Vulnerability mechanics
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
News mentions
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