CVE-2026-55496: Exposure of Sensitive Information to an Unauthorized Actor

Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, GET /api/v4/user/search calls SearchActive without adding a StatusActive predicate and serializes matches at RedactLevelUser, allowing any logged-in user to enumerate email addresses and profile metadata for inactive ...

CVE-2026-62323: Incorrect Authorization

Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, ViewerSessionValidation uses only the session-id prefix of a WOPI access token and does not enforce the requested viewer action, allowing a malicious or compromised WOPI viewer with a view session to forge the token...

CVE-2026-55502: Incorrect Authorization

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 appid values, allowing an OAuth token without Admin.Write to modify...

CVE-2026-55495: Improper Limitation of a Pathname to a Restricted Directory

Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the WOPI PUTRELATIVE handler passes X-WOPI-SuggestedTarget to URI.JoinRaw as a path rather than a filename, allowing slash and dot-dot segments to escape the source file directory and create or conditionally overwrite...

SUSE 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 clientid claim, so the JWT verifier does not load token scopes into request context and RequiredScopes treats the request like non-scoped session...

SUSE CVE-2026-54562

Cloudreve is a self-hosted file management and sharing system. Prior to 4.16.1, Cloudreve's remote download workflow accepts user-supplied URLs at POST /api/v4/workflow/download and passes them to the configured downloader without blocking loopback, localhost, IPv6 localhost, or...

CVE-2026-55497

creationtimestamp| type| source ---|---|--- 2026-07-24 22:35:12+00:00| published-proof-of-concept| https://github.com/cloudreve/cloudreve/security/advisories/GHSA-g9j2-8w95-3vwv...

CVE-2026-55502

creationtimestamp| type| source ---|---|--- 2026-07-24 22:35:09+00:00| published-proof-of-concept| https://github.com/cloudreve/cloudreve/security/advisories/GHSA-hq88-5x99-x3gf...

CVE-2026-62323

creationtimestamp| type| source ---|---|--- 2026-07-24 22:35:05+00:00| published-proof-of-concept| https://github.com/cloudreve/cloudreve/security/advisories/GHSA-c3jm-gv5r-9wcp...

GHSA-V6W6-358X-2433 Cloudreve Admin.Read OAuth tokens can trigger server-side node test requests

Summary Cloudreve exposes two admin node test endpoints under the Admin.Read OAuth scope. These endpoints accept attacker-controlled node definitions and cause Cloudreve to make outbound server-side network requests. This allows an OAuth client authorized only for Admin.Read to trigger operationa...

Cloudreve WOPI view sessions can write files and WOPI access token secret is ignored

Summary Cloudreve WOPI access tokens are generated as ., but the WOPI middleware validates only the session id prefix and never compares the supplied token to the stored token. In addition, a WOPI viewer session does not store or enforce the requested viewer action. A session created for a view o...

GHSA-C3JM-GV5R-9WCP Cloudreve WOPI view sessions can write files and WOPI access token secret is ignored

Summary Cloudreve WOPI access tokens are generated as ., but the WOPI middleware validates only the session id prefix and never compares the supplied token to the stored token. In addition, a WOPI viewer session does not store or enforce the requested viewer action. A session created for a view o...

GHSA-HQ88-5X99-X3GF Cloudreve OAuth Admin.Read scope can update OneDrive storage policy credentials

Summary Cloudreve 4.16.1 has an OAuth scope authorization bypass in the admin storage policy routes. An OAuth bearer token scoped to Admin.Read but not Admin.Write can call POST /api/v4/admin/policy/oauth/signin and update OneDrive storage policy credentials. The route is inside the admin group...

GHSA-W8X7-H2PX-XMQ8 Cloudreve: Broken Access Control in file event stream: a single-file share recipient is subscribed to the owner's parent folder and receives activity events for unshared siblings

Summary When an authenticated recipient of a single-file share opens the file event stream GET /api/v4/file/events?uri=, Cloudreve validates the URI by listing it and then subscribes the caller to parent.ID. For a single-file share, the share navigator resolves the bare share-root URI to the...

GHSA-8R7F-R8HJ-R3RV Cloudreve: Information Exposure in `GET /api/v4/user/search`: `SearchActive` omits the active-status predicate, leaking inactive/banned account emails

Summary GET /api/v4/user/search is available to any logged-in user. The service calls userClient.SearchActive, but despite its name that method filters only by email/nickname keyword and never adds a StatusActive predicate — while the sibling lookups GetActiveByID and GetActiveByDavAccount, defin...

GHSA-49H3-CWHJ-4737 Cloudreve: Path Traversal in WOPI PUT_RELATIVE Allows Arbitrary File Creation in Owner Account

Summary Cloudreve's WOPI PUTRELATIVE handler treats X-WOPI-SuggestedTarget as a path, not a filename. It splits the header on / and joins the segments onto the source file's directory with URI.JoinRaw, which feeds Go's url.JoinPath. url.JoinPath resolves ./.. segments, so a slash-bearing target...

PT-2026-64446

Name of the Vulnerable Software and Affected Versions Cloudreve versions prior to 4.17.0 Description Cloudreve fails to properly validate WOPI access tokens and enforce requested viewer actions. The system generates tokens in the format ., but the middleware.ViewerSessionValidation function only...

GO-2026-6022 Cloudreve: OAuth access tokens bypass scope enforcement due to missing client_id claim in github.com/cloudreve/Cloudreve

Cloudreve: OAuth access tokens bypass scope enforcement due to missing clientid claim in github.com/cloudreve/Cloudreve...

GO-2026-6023 Cloudreve: Non-admin remote download users can SSRF loopback/internal services and read imported responses in github.com/cloudreve/Cloudreve

Cloudreve: Non-admin remote download users can SSRF loopback/internal services and read imported responses in github.com/cloudreve/Cloudreve...

Cloudreve: Non-admin remote download users can SSRF loopback/internal services and read imported responses

Summary Cloudreve's remote download workflow accepts user-supplied URLs and passes them to the configured downloader without blocking loopback, localhost, IPv6 localhost, or redirect-to-loopback targets. When the remote download permission is granted to a non-admin user group, a normal...