Cloudreve before 4.17.0 SSRF via Admin.Read OAuth scope

Cloudreve before 4.17.0 registers the administrative node test endpoints (POST /api/v4/admin/node/test and POST /api/v4/admin/node/test/downloader) without requiring the Admin.Write OAuth scope, unlike the node create/update/delete routes. An OAuth client that has been authorized by an administrator with only the Admin.Read scope can therefore submit attacker-controlled node definitions and cause the Cloudreve server to issue outbound requests to arbitrary URLs, enabling blind server-side request forgery, internal service probing, and delivery of signed Cloudreve slave-style requests to attacker-chosen endpoints.

Problem type

Incorrect Authorization

Affected products

cloudreve

cloudreve

< 4.17.0 - AFFECTED

4.17.0 - UNAFFECTED

References

GitHub Security Advisory (GHSA-v6w6-358x-2433)

https://github.com/cloudreve/cloudreve/security/advisories/GHSA-v6w6-358x-2433

vendor-advisory

VulnCheck Advisory: Cloudreve before 4.17.0 SSRF via Admin.Read OAuth scope

https://www.vulncheck.com/advisories/cloudreve-before-4.17.0-ssrf-via-admin-read-oauth-scope

third-party-advisory

JSON source

https://cveawg.mitre.org/api/cve/CVE-2026-101048

Click to expand

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-101048",
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "dateUpdated": "2026-09-27T17:02:36.546Z",
    "dateReserved": "2026-09-27T15:48:49.472Z",
    "datePublished": "2026-09-27T17:02:36.546Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck",
        "dateUpdated": "2026-09-27T17:02:36.546Z"
      },
      "datePublic": "2026-07-23T00:00:00.000Z",
      "title": "Cloudreve before 4.17.0 SSRF via Admin.Read OAuth scope",
      "descriptions": [
        {
          "lang": "en",
          "value": "Cloudreve before 4.17.0 registers the administrative node test endpoints (POST /api/v4/admin/node/test and POST /api/v4/admin/node/test/downloader) without requiring the Admin.Write OAuth scope, unlike the node create/update/delete routes. An OAuth client that has been authorized by an administrator with only the Admin.Read scope can therefore submit attacker-controlled node definitions and cause the Cloudreve server to issue outbound requests to arbitrary URLs, enabling blind server-side request forgery, internal service probing, and delivery of signed Cloudreve slave-style requests to attacker-chosen endpoints."
        }
      ],
      "affected": [
        {
          "vendor": "cloudreve",
          "product": "cloudreve",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.17.0"
            },
            {
              "version": "4.17.0",
              "status": "unaffected",
              "versionType": "semver"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "Incorrect Authorization",
              "cweId": "CWE-863",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://github.com/cloudreve/cloudreve/security/advisories/GHSA-v6w6-358x-2433",
          "name": "GitHub Security Advisory (GHSA-v6w6-358x-2433)",
          "tags": [
            "vendor-advisory"
          ]
        },
        {
          "url": "https://www.vulncheck.com/advisories/cloudreve-before-4.17.0-ssrf-via-admin-read-oauth-scope",
          "name": "VulnCheck Advisory: Cloudreve before 4.17.0 SSRF via Admin.Read OAuth scope",
          "tags": [
            "third-party-advisory"
          ]
        }
      ],
      "metrics": [
        {
          "format": "CVSS"
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L",
            "attackVector": "NETWORK",
            "attackComplexity": "LOW",
            "privilegesRequired": "LOW",
            "userInteraction": "NONE",
            "scope": "UNCHANGED",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "availabilityImpact": "LOW",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM"
          }
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "DavidCarliez",
          "type": "reporter"
        }
      ]
    }
  }
}