Vikunja has an iCalendar Property Injection via CRLF in CalDAV Task Output_CVE-2026-35601

{
    "lastseen": "",
    "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.",
    "published": "2026-04-10T16:08:50.519Z",
    "modified": "2026-04-10T16:08:50.519Z",
    "type": "cve",
    "title": "Vikunja has an iCalendar Property Injection via CRLF in CalDAV Task Output",
    "source": "GitHub_M",
    "references": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4r\nhttps://github.com/go-vikunja/vikunja/pull/2580\nhttps://github.com/go-vikunja/vikunja/releases/tag/v2.3.0",
    "id": "CVE-2026-35601",
    "bulletinFamily": "",
    "cwe": [
        "CWE-93"
    ],
    "cvelist": null,
    "sourceData": "go-vikunja vikunja < 2.3.0",
    "sourceHref": "",
    "cvss": {
        "score": 4.1,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "vikunja",
    "version": "< 2.3.0",
    "vendor": "go-vikunja",
    "ai_description": "",
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    "ai_score": 0
}