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CVE-2026-33678

Estado: AnalizadaAlta (8.1)—

Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, `TaskAttachment.ReadOne()` queries attachments by ID only (`WHERE id = ?`), ignoring the task ID from the URL path. The permission check in `CanRead()` validates access to the task specified in the URL, but `ReadOne()` loads a different attachment that may belong to a task in another project. This allows any authenticated user to download or delete any attachment in the system by providing their own accessible task ID with a target attachment ID. Attachment IDs are sequential integers, making enumeration trivial. Version 2.2.1 patches the issue.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:N/PR:L/UI:N permite T1210 (servicio remoto con privilegios). Impactos: descarga de adjuntos (T1005) e idem con eliminación (T1565.002, manipulación de datos).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Vulnerability ScanningThreat Intelligence ProgramPrivileged Account ManagementNetwork SegmentationEncrypt Sensitive InformationDisable or Remove Feature or Program

Tecnologías afectadas (1)

Vikunja — Vikunja

CWE

Referencias

JSON original (NVD)

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          "role": "CISA Coordinator",
          "options": [
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            },
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              "technicalImpact": "total"
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          "version": "2.0.3",
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "confidentialityImpact": "HIGH"
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  "published": "2026-03-24T16:16:35.270",
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      "value": "Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, `TaskAttachment.ReadOne()` queries attachments by ID only (`WHERE id = ?`), ignoring the task ID from the URL path. The permission check in `CanRead()` validates access to the task specified in the URL, but `ReadOne()` loads a different attachment that may belong to a task in another project. This allows any authenticated user to download or delete any attachment in the system by providing their own accessible task ID with a target attachment ID. Attachment IDs are sequential integers, making enumeration trivial. Version 2.2.1 patches the issue."
    },
    {
      "lang": "es",
      "value": "Vikunja es una plataforma de gestión de tareas de código abierto y autoalojada. Antes de la versión 2.2.1, 'TaskAttachment.ReadOne()' consulta los adjuntos solo por ID ('WHERE id = ?'), ignorando el ID de la tarea de la ruta URL. La verificación de permisos en 'CanRead()' valida el acceso a la tarea especificada en la URL, pero 'ReadOne()' carga un adjunto diferente que puede pertenecer a una tarea en otro proyecto. Esto permite a cualquier usuario autenticado descargar o eliminar cualquier adjunto en el sistema proporcionando su propio ID de tarea accesible junto con un ID de adjunto objetivo. Los ID de los adjuntos son enteros secuenciales, lo que hace que la enumeración sea trivial. La versión 2.2.1 corrige el problema."
    }
  ],
  "lastModified": "2026-06-17T10:37:54.770",
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