FKIE_CVE-2020-10516

Vulnerability from fkie_nvd - Published: 2020-06-03 14:15 - Updated: 2026-06-17 02:47
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
An improper access control vulnerability was identified in the GitHub Enterprise Server API that allowed an organization member to escalate permissions and gain access to unauthorized repositories within an organization. This vulnerability affected all versions of GitHub Enterprise Server prior to 2.21 and was fixed in 2.20.9, 2.19.15, and 2.18.20. This vulnerability was reported via the GitHub Bug Bounty program.
References
product-cna@github.comhttps://enterprise.github.com/releases/2.18.20/notesRelease Notes, Third Party Advisory
product-cna@github.comhttps://enterprise.github.com/releases/2.19.15/notesRelease Notes, Third Party Advisory
product-cna@github.comhttps://enterprise.github.com/releases/2.20.9/notesRelease Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://enterprise.github.com/releases/2.18.20/notesRelease Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://enterprise.github.com/releases/2.19.15/notesRelease Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://enterprise.github.com/releases/2.20.9/notesRelease Notes, Third Party Advisory
Impacted products
Vendor Product Version
github github *
github github *
github github *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "GitHub Enterprise Server",
          "vendor": "GitHub",
          "versions": [
            {
              "lessThan": "2.20.9",
              "status": "affected",
              "version": "2.20",
              "versionType": "custom"
            },
            {
              "lessThan": "2.19.15",
              "status": "affected",
              "version": "2.19",
              "versionType": "custom"
            },
            {
              "lessThan": "2.18.20",
              "status": "affected",
              "version": "2.18",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "product-cna@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:github:github:*:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "1D3E4C5E-345B-47A7-95DE-27FA144652F7",
              "versionEndExcluding": "2.18.20",
              "versionStartIncluding": "2.18.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:github:github:*:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "3BB3EC19-93F9-4D28-8F30-9B659CB2F3E4",
              "versionEndExcluding": "2.19.15",
              "versionStartIncluding": "2.19.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:github:github:*:*:*:*:enterprise:*:*:*",
              "matchCriteriaId": "AE0B3224-DAA6-4EC5-B70D-4328F397511E",
              "versionEndExcluding": "2.20.9",
              "versionStartIncluding": "2.20.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An improper access control vulnerability was identified in the GitHub Enterprise Server API that allowed an organization member to escalate permissions and gain access to unauthorized repositories within an organization. This vulnerability affected all versions of GitHub Enterprise Server prior to 2.21 and was fixed in 2.20.9, 2.19.15, and 2.18.20. This vulnerability was reported via the GitHub Bug Bounty program."
    },
    {
      "lang": "es",
      "value": "Se identific\u00f3 una vulnerabilidad de control de acceso inapropiado en la API de GitHub Enterprise Server, que permiti\u00f3 a un miembro de la organizaci\u00f3n escalar permisos y conseguir acceso a repositorios no autorizados dentro de una organizaci\u00f3n. Esta vulnerabilidad afect\u00f3 a todas las versiones de GitHub Enterprise Server anteriores a 2.21 y fue corregida en las versiones 2.20.9, 2.19.15 y 2.18.20. Esta vulnerabilidad fue reportada por medio del programa GitHub Bug Bounty."
    }
  ],
  "id": "CVE-2020-10516",
  "lastModified": "2026-06-17T02:47:57.033",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-06-03T14:15:12.377",
  "references": [
    {
      "source": "product-cna@github.com",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://enterprise.github.com/releases/2.18.20/notes"
    },
    {
      "source": "product-cna@github.com",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://enterprise.github.com/releases/2.19.15/notes"
    },
    {
      "source": "product-cna@github.com",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://enterprise.github.com/releases/2.20.9/notes"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://enterprise.github.com/releases/2.18.20/notes"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://enterprise.github.com/releases/2.19.15/notes"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://enterprise.github.com/releases/2.20.9/notes"
    }
  ],
  "sourceIdentifier": "product-cna@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-285"
        }
      ],
      "source": "product-cna@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-552"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.