{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-77637",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-22T17:33:08.150715Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-22T17:43:54.828Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "cloudreve",
          "vendor": "cloudreve",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 4.18.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, tool.GET(\"wopi\") and tool.POST(\"mail\") in routers/router.go inherit ScopeAdminRead but omit the RequiredScopes(types.ScopeAdminWrite) middleware applied to neighboring state-changing admin tool routes. An OAuth application or API key limited to Admin.Read can therefore probe configured WOPI service endpoints and send arbitrary test email through the server SMTP configuration, exceeding the token\u0027s intended read-only authorization boundary. This issue is fixed in version 4.18.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.8,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862: Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-22T15:30:59.216Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/cloudreve/cloudreve/security/advisories/GHSA-w89x-c962-c44g",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/cloudreve/cloudreve/security/advisories/GHSA-w89x-c962-c44g"
        },
        {
          "name": "https://github.com/cloudreve/cloudreve/commit/bce08f88e9d8f881e78fd18e7a6598b31922c492",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cloudreve/cloudreve/commit/bce08f88e9d8f881e78fd18e7a6598b31922c492"
        },
        {
          "name": "https://github.com/cloudreve/cloudreve/releases/tag/4.18.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cloudreve/cloudreve/releases/tag/4.18.0"
        }
      ],
      "source": {
        "advisory": "GHSA-w89x-c962-c44g",
        "discovery": "UNKNOWN"
      },
      "title": "Cloudreve: Privilege Scope Bypass: State-Mutating Admin Operations Accessible via Read-Only OAuth Scope"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-77637",
    "datePublished": "2026-09-22T15:30:59.216Z",
    "dateReserved": "2026-08-20T20:52:01.928Z",
    "dateUpdated": "2026-09-22T17:43:54.828Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-77637\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-09-22T17:33:08.150715Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-09-22T17:33:08.871Z\"}}], \"cna\": {\"title\": \"Cloudreve: Privilege Scope Bypass: State-Mutating Admin Operations Accessible via Read-Only OAuth Scope\", \"source\": {\"advisory\": \"GHSA-w89x-c962-c44g\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 3.8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"LOW\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"HIGH\", \"confidentialityImpact\": \"LOW\"}}], \"affected\": [{\"vendor\": \"cloudreve\", \"product\": \"cloudreve\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 4.18.0\"}]}], \"references\": [{\"url\": \"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-w89x-c962-c44g\", \"name\": \"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-w89x-c962-c44g\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/cloudreve/cloudreve/commit/bce08f88e9d8f881e78fd18e7a6598b31922c492\", \"name\": \"https://github.com/cloudreve/cloudreve/commit/bce08f88e9d8f881e78fd18e7a6598b31922c492\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/cloudreve/cloudreve/releases/tag/4.18.0\", \"name\": \"https://github.com/cloudreve/cloudreve/releases/tag/4.18.0\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, tool.GET(\\\"wopi\\\") and tool.POST(\\\"mail\\\") in routers/router.go inherit ScopeAdminRead but omit the RequiredScopes(types.ScopeAdminWrite) middleware applied to neighboring state-changing admin tool routes. An OAuth application or API key limited to Admin.Read can therefore probe configured WOPI service endpoints and send arbitrary test email through the server SMTP configuration, exceeding the token\u0027s intended read-only authorization boundary. This issue is fixed in version 4.18.0.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-862\", \"description\": \"CWE-862: Missing Authorization\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-09-22T15:30:59.216Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-77637\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-22T17:43:54.828Z\", \"dateReserved\": \"2026-08-20T20:52:01.928Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-09-22T15:30:59.216Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}