CVE-2026-35598

{
  "id": "CVE-2026-35598",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-10T17:17:03.370",
  "lastModified": "2026-10-26T21:10:00.170",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the CalDAV GetResource and GetResourcesByList methods fetch tasks by UID from the database without verifying that the authenticated user has access to the task's project. Any authenticated CalDAV user who knows (or guesses) a task UID can read the full task data from any project on the instance. This vulnerability is fixed in 2.3.0."
    },
    {
      "lang": "es",
      "value": "Vikunja es una plataforma de gestión de tareas de código abierto y autoalojada. Antes de la versión 2.3.0, los métodos CalDAV GetResource y GetResourcesByList recuperan tareas por UID de la base de datos sin verificar que el usuario autenticado tenga acceso al proyecto de la tarea. Cualquier usuario CalDAV autenticado que conozca (o adivine) un UID de tarea puede leer los datos completos de la tarea de cualquier proyecto en la instancia. Esta vulnerabilidad se corrigió en la versión 2.3.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "go-vikunja",
          "product": "vikunja",
          "versions": [
            {
              "version": "< 2.3.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-14T14:20:38.753843Z",
          "id": "CVE-2026-35598",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "2.3.0",
              "matchCriteriaId": "CC8B46CF-6E7B-46F4-8275-D1A38F2A6D5E"
            }
          ]
        }
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    }
  ],
  "references": [
    {
      "url": "https://github.com/go-vikunja/vikunja/commit/879462d717351fe5d276ddec5246bdec31b41661",
      "source": "[email protected]",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/go-vikunja/vikunja/pull/2579",
      "source": "[email protected]",
      "tags": [
        "Issue Tracking"
      ]
    },
    {
      "url": "https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0",
      "source": "[email protected]",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-48ch-p4gq-x46x",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-48ch-p4gq-x46x",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ]
    }
  ]
}