CVE-2026-35601

MEDIUM

4.1

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.

CVE Details

CVSS v3.1 Score4.1

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionREQUIRED

Published4/10/2026

Last Modified4/10/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-93

References

https://github.com/go-vikunja/vikunja/pull/2580(security-advisories@github.com)

https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0(security-advisories@github.com)

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4r(security-advisories@github.com)

IOC Correlations

No correlations recorded

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