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Vulnerable Software

Vulnerability Details CVE-2026-35601

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.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.0

EPSS Ranking 8.1%

CVSS Severity

CVSS v3 Score 4.1

References

Products affected by CVE-2026-35601

Vikunja » Vikunja » Version: 0.1

cpe:2.3:a:vikunja:vikunja:0.1
Vikunja » Vikunja » Version: 0.10

cpe:2.3:a:vikunja:vikunja:0.10
Vikunja » Vikunja » Version: 0.11

cpe:2.3:a:vikunja:vikunja:0.11
Vikunja » Vikunja » Version: 0.12

cpe:2.3:a:vikunja:vikunja:0.12
Vikunja » Vikunja » Version: 0.13

cpe:2.3:a:vikunja:vikunja:0.13
Vikunja » Vikunja » Version: 0.13.1

cpe:2.3:a:vikunja:vikunja:0.13.1
Vikunja » Vikunja » Version: 0.14.0

cpe:2.3:a:vikunja:vikunja:0.14.0
Vikunja » Vikunja » Version: 0.14.1

cpe:2.3:a:vikunja:vikunja:0.14.1
Vikunja » Vikunja » Version: 0.15.0

cpe:2.3:a:vikunja:vikunja:0.15.0
Vikunja » Vikunja » Version: 0.15.1

cpe:2.3:a:vikunja:vikunja:0.15.1
Vikunja » Vikunja » Version: 0.16.0

cpe:2.3:a:vikunja:vikunja:0.16.0
Vikunja » Vikunja » Version: 0.16.1

cpe:2.3:a:vikunja:vikunja:0.16.1
Vikunja » Vikunja » Version: 0.17.0

cpe:2.3:a:vikunja:vikunja:0.17.0
Vikunja » Vikunja » Version: 0.17.1

cpe:2.3:a:vikunja:vikunja:0.17.1
Vikunja » Vikunja » Version: 0.18.0

cpe:2.3:a:vikunja:vikunja:0.18.0
Vikunja » Vikunja » Version: 0.18.1

cpe:2.3:a:vikunja:vikunja:0.18.1
Vikunja » Vikunja » Version: 0.19.0

cpe:2.3:a:vikunja:vikunja:0.19.0
Vikunja » Vikunja » Version: 0.19.1

cpe:2.3:a:vikunja:vikunja:0.19.1
Vikunja » Vikunja » Version: 0.19.2

cpe:2.3:a:vikunja:vikunja:0.19.2
Vikunja » Vikunja » Version: 0.2

cpe:2.3:a:vikunja:vikunja:0.2
Vikunja » Vikunja » Version: 0.20.0

cpe:2.3:a:vikunja:vikunja:0.20.0
Vikunja » Vikunja » Version: 0.20.1

cpe:2.3:a:vikunja:vikunja:0.20.1
Vikunja » Vikunja » Version: 0.20.2

cpe:2.3:a:vikunja:vikunja:0.20.2
Vikunja » Vikunja » Version: 0.20.3

cpe:2.3:a:vikunja:vikunja:0.20.3
Vikunja » Vikunja » Version: 0.20.4

cpe:2.3:a:vikunja:vikunja:0.20.4
Vikunja » Vikunja » Version: 0.20.5

cpe:2.3:a:vikunja:vikunja:0.20.5
Vikunja » Vikunja » Version: 0.21.0

cpe:2.3:a:vikunja:vikunja:0.21.0
Vikunja » Vikunja » Version: 0.22.0

cpe:2.3:a:vikunja:vikunja:0.22.0
Vikunja » Vikunja » Version: 0.22.1

cpe:2.3:a:vikunja:vikunja:0.22.1
Vikunja » Vikunja » Version: 0.23.0

cpe:2.3:a:vikunja:vikunja:0.23.0
Vikunja » Vikunja » Version: 0.24.0

cpe:2.3:a:vikunja:vikunja:0.24.0
Vikunja » Vikunja » Version: 0.24.1

cpe:2.3:a:vikunja:vikunja:0.24.1
Vikunja » Vikunja » Version: 0.24.2

cpe:2.3:a:vikunja:vikunja:0.24.2
Vikunja » Vikunja » Version: 0.24.3

cpe:2.3:a:vikunja:vikunja:0.24.3
Vikunja » Vikunja » Version: 0.24.4

cpe:2.3:a:vikunja:vikunja:0.24.4
Vikunja » Vikunja » Version: 0.24.5

cpe:2.3:a:vikunja:vikunja:0.24.5
Vikunja » Vikunja » Version: 0.24.6

cpe:2.3:a:vikunja:vikunja:0.24.6
Vikunja » Vikunja » Version: 0.3

cpe:2.3:a:vikunja:vikunja:0.3
Vikunja » Vikunja » Version: 0.4

cpe:2.3:a:vikunja:vikunja:0.4
Vikunja » Vikunja » Version: 0.5

cpe:2.3:a:vikunja:vikunja:0.5
Vikunja » Vikunja » Version: 0.6

cpe:2.3:a:vikunja:vikunja:0.6
Vikunja » Vikunja » Version: 0.7

cpe:2.3:a:vikunja:vikunja:0.7
Vikunja » Vikunja » Version: 0.8

cpe:2.3:a:vikunja:vikunja:0.8
Vikunja » Vikunja » Version: 0.9

cpe:2.3:a:vikunja:vikunja:0.9
Vikunja » Vikunja » Version: 1.0.0

cpe:2.3:a:vikunja:vikunja:1.0.0
Vikunja » Vikunja » Version: 1.1.0

cpe:2.3:a:vikunja:vikunja:1.1.0
Vikunja » Vikunja » Version: 2.0.0

cpe:2.3:a:vikunja:vikunja:2.0.0
Vikunja » Vikunja » Version: 2.1.0

cpe:2.3:a:vikunja:vikunja:2.1.0

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-35601

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