FKIE_CVE-2026-35601

Vulnerability from fkie_nvd - Published: 2026-04-10 17:17 - Updated: 2026-04-17 21:56
Severity ?
4.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N
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.
References
security-advisories@github.comhttps://github.com/go-vikunja/vikunja/pull/2580Issue Tracking
security-advisories@github.comhttps://github.com/go-vikunja/vikunja/releases/tag/v2.3.0Release Notes
security-advisories@github.comhttps://github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4rExploit, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4rExploit, Vendor Advisory
Impacted products
Vendor Product Version
vikunja vikunja *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "CC8B46CF-6E7B-46F4-8275-D1A38F2A6D5E",
              "versionEndExcluding": "2.3.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2026-35601",
  "lastModified": "2026-04-17T21:56:20.487",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-04-10T17:17:03.837",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Issue Tracking"
      ],
      "url": "https://github.com/go-vikunja/vikunja/pull/2580"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
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        "Vendor Advisory"
      ],
      "url": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4r"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4r"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-93"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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