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CVE-2026-24900

Estado: AnalizadaMedia (6.5)—

MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, the courses/<:course_id>/assignments/<:assignment_id>/submissions/html_content accepted a select_file_id parameter to serve SubmissionFile objects containing a record of files submitted by students. This parameter was not correctly scoped to the requesting user, allowing users access arbitrary submission file contents by id. This vulnerability is fixed in 2.9.1.

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).

Tecnologías afectadas (1)

Markusproject — Markus

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-24900",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-24900",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-02-10T15:30:26.838188Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "MarkUsProject",
          "product": "Markus",
          "versions": [
            {
              "status": "affected",
              "version": "< 2.9.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-02-09T20:15:56.387",
  "references": [
    {
      "url": "https://github.com/MarkUsProject/Markus/commit/7daed9fd2d44932223798d997b55094a3bff104b",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1",
      "tags": [
        "Product",
        "Release Notes"
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    {
      "url": "https://github.com/MarkUsProject/Markus/security/advisories/GHSA-56gh-8hmq-7q88",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, the courses/<:course_id>/assignments/<:assignment_id>/submissions/html_content accepted a select_file_id parameter to serve SubmissionFile objects containing a record of files submitted by students. This parameter was not correctly scoped to the requesting user, allowing users access arbitrary submission file contents by id. This vulnerability is fixed in 2.9.1."
    },
    {
      "lang": "es",
      "value": "MarkUs es una aplicación web para la entrega y calificación de tareas de estudiantes. Antes de 2.9.1, la ruta courses/&lt;:course_id&gt;/assignments/&lt;:assignment_id&gt;/submissions/html_content aceptaba un parámetro select_file_id para servir objetos SubmissionFile que contenían un registro de los archivos entregados por los estudiantes. Este parámetro no estaba correctamente acotado al usuario solicitante, permitiendo a los usuarios acceder a contenidos arbitrarios de archivos de entrega por ID. Esta vulnerabilidad está corregida en 2.9.1."
    }
  ],
  "lastModified": "2026-06-17T10:23:46.567",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:markusproject:markus:*:*:*:*:*:*:*:*",
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              "matchCriteriaId": "2D6B2B7B-F46C-4CEE-86D4-B25D3746747A",
              "versionEndExcluding": "2.9.1"
            }
          ],
          "operator": "OR"
        }
      ]
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  "sourceIdentifier": "security-advisories@github.com"
}