CyberSecBulletin

Cloudreve vulnerabilities

We track 5 vulnerabilities in Cloudreve products. 5 are rated high or critical, and none are known to be exploited. The most recent was published on September 22, 2026.

5vulnerabilities
1critical
4high
0exploited
7.7average CVSS score

Latest Cloudreve vulnerabilities

  • 7.1 High severity

    cloudreve: Concurrent Execution using Shared Resource with Improper Synchronization

    CVE-2026-77633Cloudreve

    Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, PrepareUpload in pkg/filemanager/fs/dbfs/upload.go checks a stale in-memory user storage value through validateUserCapacity and later applies an unconditional storage charge outsid

  • 7.1 High severity

    cloudreve: Incorrect Authorization

    CVE-2026-55502Cloudreve

    Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, POST /api/v4/admin/policy/oauth/signin requires only Admin.Read even though GetOauthRedirectService persists caller-supplied OneDrive secret and app_id values, allowing an OAuth to

  • 7.1 High severity

    cloudreve: Incorrect Authorization

    CVE-2026-54563Cloudreve

    Cloudreve is a self-hosted file management and sharing system. Prior to 4.16.1, a Cloudreve WebDAV account rooted at a configured folder can send paths such as /dav/%2e%2e/outside.txt because stripPrefix in pkg/webdav/webdav.go joins the decoded request suffix

  • 7.6 High severity

    cloudreve: Incorrect Authorization

    CVE-2026-54560Cloudreve

    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

  • 9.8 Critical severity

    cloudreve: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

    CVE-2026-25726Cloudreve

    Cloudreve is a self-hosted file management and sharing system. Prior to version 4.13.0, the application uses the weak pseudo-random number generator math/rand seeded with time.Now().UnixNano() to generate critical security secrets, including the secret_key, an