4.1

CVE-2026-35601

Exploit

Vikunja has an iCalendar Property Injection via CRLF in CalDAV Task Output

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Vikunja ≫ Vikunja Version < 2.3.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.093
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 4.1 2.3 1.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N
CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')

The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.

https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0
Release Notes
https://github.com/go-vikunja/vikunja/pull/2580
Issue Tracking
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4r
Vendor Advisory
Exploit