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    CVE-2026-54560

    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.

    Published:Jul 15, 2026
    Last Modified:Jul 15, 2026
    EPS:Jul 15, 2026
    EPSS Score:
    CVSS Score:7.6

    Affected Products

    Vendor
    Cloudreve
    Product
    Cloudreve

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-863 Incorrect Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-55497 (CVSS 6.5) — Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the built-in thumbnail and ava…
    CVE-2026-55496 (CVSS 4.3) — Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, GET /api/v4/user/search calls …
    CVE-2026-55495 (CVSS 4.3) — Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the WOPI PUT_RELATIVE handler …
    CVE-2026-54563 (CVSS 7.1) — Cloudreve is a self-hosted file management and sharing system. Prior to 4.16.1, a Cloudreve WebDAV account roo…
    CVE-2026-54562 (CVSS 6.5) — Cloudreve is a self-hosted file management and sharing system. Prior to 4.16.1, Cloudreve's remote download wo…
    CVE-2026-25726 (CVSS 8.1) — Cloudreve is a self-hosted file management and sharing system. Prior to version 4.13.0, the application uses t…
    CVE-2022-32167 (CVSS 5.4) — Cloudreve versions v1.0.0 through v3.5.3 are vulnerable to Stored Cross-Site Scripting (XSS), via the file upl…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High