Vulnerability-Lookup

GHSA-GFJ9-8V3R-JH2Q

Vulnerability from github – Published: 2026-06-30 21:31 – Updated: 2026-07-02 18:36

Details

A UI misrepresentation vulnerability was identified in GitHub Enterprise Server that allowed an OAuth application to gain unintended access to an organization's runner management. An attacker could exploit this by creating an OAuth application requesting the manage_runners:org scope and directing a victim user to authorize it, as the scope was not displayed on the authorization consent screen. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was fixed in versions 3.21.2, 3.20.4, 3.19.8, 3.18.11, 3.17.17, 3.16.20. This vulnerability was reported via the GitHub Bug Bounty program.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

4.8 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-9106"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-451"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-30T21:16:30Z",
    "severity": "MODERATE"
  },
  "details": "A UI misrepresentation vulnerability was identified in GitHub Enterprise Server that allowed an OAuth application to gain unintended access to an organization\u0027s runner management. An attacker could exploit this by creating an OAuth application requesting the manage_runners:org scope and directing a victim user to authorize it, as the scope was not displayed on the authorization consent screen. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was  fixed in versions 3.21.2, 3.20.4, 3.19.8, 3.18.11, 3.17.17, 3.16.20. This vulnerability was reported via the GitHub Bug Bounty program.",
  "id": "GHSA-gfj9-8v3r-jh2q",
  "modified": "2026-07-02T18:36:18Z",
  "published": "2026-06-30T21:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9106"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.20"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.17"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.11"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.8"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.4"
    },
    {
      "type": "WEB",
      "url": "https://docs.github.com/en/enterprise-server@3.21/admin/release-notes#3.21.2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-9106 (GCVE-0-2026-9106)

Vulnerability from cvelistv5 – Published: 2026-06-30 20:21 – Updated: 2026-07-01 15:37

Title

UI misrepresentation vulnerability in GitHub Enterprise Server allowed unauthorized organization runner management via undisclosed OAuth scope on consent screen

Summary

Severity

4.8 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-01 15:37 UTC

CWE

CWE-451 - User Interface (UI) Misrepresentation of Critical Information

Assigner

GitHub_P mitre root

References

6 references

URL	Tags
https://docs.github.com/en/enterprise-server@3.17…	release-notes
https://docs.github.com/en/enterprise-server@3.18…	release-notes
https://docs.github.com/en/enterprise-server@3.19…	release-notes
https://docs.github.com/en/enterprise-server@3.20…	release-notes
https://docs.github.com/en/enterprise-server@3.21…	release-notes
https://docs.github.com/en/enterprise-server@3.16…	release-notes

Impacted products

1 product

Vendor	Product	Version
GitHub	Enterprise Server	Affected: 3.17.0 , ≤ 3.17.16 (semver) Affected: 3.18.0 , ≤ 3.18.10 (semver) Affected: 3.19.0 , ≤ 3.19.7 (semver) Affected: 3.20.0 , ≤ 3.20.3 (semver) Affected: 3.21.0 , ≤ 3.21.1 (semver) Affected: 3.16.0 , ≤ 3.16.19 (semver)

Credits

VAIBHAV SINGH (@vaib25vicky)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-9106",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-01T15:37:19.373936Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-01T15:37:28.521Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "Enterprise Server",
          "vendor": "GitHub",
          "versions": [
            {
              "changes": [
                {
                  "at": "3.17.17",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "3.17.16",
              "status": "affected",
              "version": "3.17.0",
              "versionType": "semver"
            },
            {
              "changes": [
                {
                  "at": "3.18.11",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "3.18.10",
              "status": "affected",
              "version": "3.18.0",
              "versionType": "semver"
            },
            {
              "changes": [
                {
                  "at": "3.19.8",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "3.19.7",
              "status": "affected",
              "version": "3.19.0",
              "versionType": "semver"
            },
            {
              "changes": [
                {
                  "at": "3.20.4",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "3.20.3",
              "status": "affected",
              "version": "3.20.0",
              "versionType": "semver"
            },
            {
              "changes": [
                {
                  "at": "3.21.2",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "3.21.1",
              "status": "affected",
              "version": "3.21.0",
              "versionType": "semver"
            },
            {
              "changes": [
                {
                  "at": "3.16.20",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "3.16.19",
              "status": "affected",
              "version": "3.16.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "VAIBHAV SINGH (@vaib25vicky)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "A UI misrepresentation vulnerability was identified in GitHub Enterprise Server that allowed an OAuth application to gain unintended access to an organization\u0027s runner management. An attacker could exploit this by creating an OAuth application requesting the \u003ccode\u003emanage_runners:org\u003c/code\u003e scope and directing a victim user to authorize it, as the scope was not displayed on the authorization consent screen. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was  fixed in versions 3.21.2, 3.20.4, 3.19.8, 3.18.11, 3.17.17, 3.16.20. This vulnerability was reported via the GitHub Bug Bounty program.\u003cbr\u003e\u003cbr\u003e"
            }
          ],
          "value": "A UI misrepresentation vulnerability was identified in GitHub Enterprise Server that allowed an OAuth application to gain unintended access to an organization\u0027s runner management. An attacker could exploit this by creating an OAuth application requesting the manage_runners:org scope and directing a victim user to authorize it, as the scope was not displayed on the authorization consent screen. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was  fixed in versions 3.21.2, 3.20.4, 3.19.8, 3.18.11, 3.17.17, 3.16.20. This vulnerability was reported via the GitHub Bug Bounty program."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-173",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-173 Action Spoofing"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-451",
              "description": "CWE-451: User Interface (UI) Misrepresentation of Critical Information",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-01T13:03:08.700Z",
        "orgId": "82327ea3-741d-41e4-88f8-2cf9e791e760",
        "shortName": "GitHub_P"
      },
      "references": [
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.17"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.11"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.8"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.4"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://docs.github.com/en/enterprise-server@3.21/admin/release-notes#3.21.2"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.20"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "UI misrepresentation vulnerability in GitHub Enterprise Server allowed unauthorized organization runner management via undisclosed OAuth scope on consent screen",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "82327ea3-741d-41e4-88f8-2cf9e791e760",
    "assignerShortName": "GitHub_P",
    "cveId": "CVE-2026-9106",
    "datePublished": "2026-06-30T20:21:12.484Z",
    "dateReserved": "2026-05-20T17:12:51.109Z",
    "dateUpdated": "2026-07-01T15:37:28.521Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.