{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54560", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-15T19:04:14.457Z", "datePublished": "2026-07-15T14:40:24.765Z", "dateUpdated": "2026-07-15T15:16:35.699Z"}, "containers": {"cna": {"title": "Cloudreve: OAuth access tokens bypass scope enforcement due to missing client_id claim", "problemTypes": [{"descriptions": [{"cweId": "CWE-863", "lang": "en", "description": "CWE-863: Incorrect Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/cloudreve/cloudreve/security/advisories/GHSA-vgj4-345g-jcf8", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/cloudreve/cloudreve/security/advisories/GHSA-vgj4-345g-jcf8"}, {"name": "https://github.com/cloudreve/cloudreve/commit/ed20843dc3df20a25fcaf6b538647e11c4d68d87", "tags": ["x_refsource_MISC"], "url": "https://github.com/cloudreve/cloudreve/commit/ed20843dc3df20a25fcaf6b538647e11c4d68d87"}, {"name": "https://github.com/cloudreve/cloudreve/releases/tag/4.16.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/cloudreve/cloudreve/releases/tag/4.16.1"}], "affected": [{"vendor": "cloudreve", "product": "cloudreve", "versions": [{"version": ">= 4.12.0, < 4.16.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-15T14:40:24.765Z"}, "descriptions": [{"lang": "en", "value": "Cloudreve is a self-hosted file management and sharing system. From 4.12.0 until 4.16.1, Cloudreve's OAuth access tokens are issued without the OAuth client_id claim, so the JWT verifier does not load token scopes into request context and RequiredScopes treats the request like non-scoped session authentication, allowing a low-scope OAuth access token to call APIs requiring higher scopes such as file, share, workflow, user setting, WebDAV account, and potentially admin scopes. This issue is fixed in version 4.16.1."}], "source": {"advisory": "GHSA-vgj4-345g-jcf8", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/cloudreve/cloudreve/security/advisories/GHSA-vgj4-345g-jcf8", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-15T15:16:30.603425Z", "id": "CVE-2026-54560", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-15T15:16:35.699Z"}}]}}

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