CVE-2026-24900 (GCVE-0-2026-24900)

Vulnerability from cvelistv5 – Published: 2026-02-09 18:39 – Updated: 2026-02-10 16:01
VLAI?
Title
MarkUs has a submission-view IDOR exposes all student submissions
Summary
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.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
MarkUsProject Markus Affected: < 2.9.1
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-24900",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-10T15:30:26.838188Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-10T16:01:21.289Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Markus",
          "vendor": "MarkUsProject",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.9.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, the courses/\u003c:course_id\u003e/assignments/\u003c:assignment_id\u003e/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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-09T18:39:52.161Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/MarkUsProject/Markus/security/advisories/GHSA-56gh-8hmq-7q88",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/MarkUsProject/Markus/security/advisories/GHSA-56gh-8hmq-7q88"
        },
        {
          "name": "https://github.com/MarkUsProject/Markus/commit/7daed9fd2d44932223798d997b55094a3bff104b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/MarkUsProject/Markus/commit/7daed9fd2d44932223798d997b55094a3bff104b"
        },
        {
          "name": "https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1"
        }
      ],
      "source": {
        "advisory": "GHSA-56gh-8hmq-7q88",
        "discovery": "UNKNOWN"
      },
      "title": "MarkUs has a submission-view IDOR exposes all student submissions"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-24900",
    "datePublished": "2026-02-09T18:39:52.161Z",
    "dateReserved": "2026-01-27T19:35:20.529Z",
    "dateUpdated": "2026-02-10T16:01:21.289Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-24900\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-02-09T20:15:56.387\",\"lastModified\":\"2026-02-19T20:08:14.250\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, the courses/\u003c:course_id\u003e/assignments/\u003c:assignment_id\u003e/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 aplicaci\u00f3n web para la entrega y calificaci\u00f3n de tareas de estudiantes. Antes de 2.9.1, la ruta courses/\u0026lt;:course_id\u0026gt;/assignments/\u0026lt;:assignment_id\u0026gt;/submissions/html_content aceptaba un par\u00e1metro select_file_id para servir objetos SubmissionFile que conten\u00edan un registro de los archivos entregados por los estudiantes. Este par\u00e1metro no estaba correctamente acotado al usuario solicitante, permitiendo a los usuarios acceder a contenidos arbitrarios de archivos de entrega por ID. Esta vulnerabilidad est\u00e1 corregida en 2.9.1.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-639\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:markusproject:markus:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.9.1\",\"matchCriteriaId\":\"2D6B2B7B-F46C-4CEE-86D4-B25D3746747A\"}]}]}],\"references\":[{\"url\":\"https://github.com/MarkUsProject/Markus/commit/7daed9fd2d44932223798d997b55094a3bff104b\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Product\",\"Release Notes\"]},{\"url\":\"https://github.com/MarkUsProject/Markus/security/advisories/GHSA-56gh-8hmq-7q88\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-24900\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-02-10T15:30:26.838188Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-02-10T15:30:27.490Z\"}}], \"cna\": {\"title\": \"MarkUs has a submission-view IDOR exposes all student submissions\", \"source\": {\"advisory\": \"GHSA-56gh-8hmq-7q88\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"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\"}}], \"affected\": [{\"vendor\": \"MarkUsProject\", \"product\": \"Markus\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 2.9.1\"}]}], \"references\": [{\"url\": \"https://github.com/MarkUsProject/Markus/security/advisories/GHSA-56gh-8hmq-7q88\", \"name\": \"https://github.com/MarkUsProject/Markus/security/advisories/GHSA-56gh-8hmq-7q88\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/MarkUsProject/Markus/commit/7daed9fd2d44932223798d997b55094a3bff104b\", \"name\": \"https://github.com/MarkUsProject/Markus/commit/7daed9fd2d44932223798d997b55094a3bff104b\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1\", \"name\": \"https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, the courses/\u003c:course_id\u003e/assignments/\u003c:assignment_id\u003e/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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-639\", \"description\": \"CWE-639: Authorization Bypass Through User-Controlled Key\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-02-09T18:39:52.161Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-24900\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-02-10T16:01:21.289Z\", \"dateReserved\": \"2026-01-27T19:35:20.529Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-02-09T18:39:52.161Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.