| Summary | 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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| Publication Date | April 11, 2026, 2:17 a.m. |
| Registration Date | April 15, 2026, 11:36 a.m. |
| Last Update | April 14, 2026, 1:16 a.m. |
| CVSS3.1 : MEDIUM | |
| スコア | 4.1 |
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| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N |
| 攻撃元区分(AV) | ネットワーク |
| 攻撃条件の複雑さ(AC) | 低 |
| 攻撃に必要な特権レベル(PR) | 低 |
| 利用者の関与(UI) | 要 |
| 影響の想定範囲(S) | 変更あり |
| 機密性への影響(C) | なし |
| 完全性への影響(I) | 低 |
| 可用性への影響(A) | なし |