CVE-2026-77633 Cloudreve: Storage-quota TOCTOU race allows quota bypass and storage-based denial of service

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 outside the same quota-enforcing transactio...

CVE-2026-77633 Cloudreve: Storage-quota TOCTOU race allows quota bypass and storage-based denial of service

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 outside the same quota-enforcing transactio...

EUVD-2026-84528

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 outside the same quota-enforcing transactio...

CVE-2026-77633 Cloudreve: Storage-quota TOCTOU race allows quota bypass and storage-based denial of service

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 outside the same quota-enforcing transactio...

CVE-2026-79913 Cloudreve: SSRF guard bypass: checkIP does not decode IPv6-transition wrappers (NAT64, IPv4-compatible, 6to4) reaching internal and cloud-metadata addresses

Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, the ValidateExternalURL server-side request forgery guard in pkg/request/ssrf.go passes resolved addresses to checkIP without decoding NAT64, IPv4-compatible, and 6to4 IPv4-in-IPv6 transition forms. An authenticated...

CVE-2026-79913 Cloudreve: SSRF guard bypass: checkIP does not decode IPv6-transition wrappers (NAT64, IPv4-compatible, 6to4) reaching internal and cloud-metadata addresses

Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, the ValidateExternalURL server-side request forgery guard in pkg/request/ssrf.go passes resolved addresses to checkIP without decoding NAT64, IPv4-compatible, and 6to4 IPv4-in-IPv6 transition forms. An authenticated...

CVE-2026-79913 Cloudreve: SSRF guard bypass: checkIP does not decode IPv6-transition wrappers (NAT64, IPv4-compatible, 6to4) reaching internal and cloud-metadata addresses

Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, the ValidateExternalURL server-side request forgery guard in pkg/request/ssrf.go passes resolved addresses to checkIP without decoding NAT64, IPv4-compatible, and 6to4 IPv4-in-IPv6 transition forms. An authenticated...

EUVD-2026-84527

Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, the ValidateExternalURL server-side request forgery guard in pkg/request/ssrf.go passes resolved addresses to checkIP without decoding NAT64, IPv4-compatible, and 6to4 IPv4-in-IPv6 transition forms. An authenticated...

CVE-2026-79913

Cloudreve (self-hosted file management system) has an SSRF guard bypass in the ValidateExternalURL function (pkg/request/ssrf.go) prior to version 4.18.0 . The checkIP validator fails to decode NAT64 , IPv4-compatible , and 6to4 IPv4-in-IPv6 transition address wrappers, causing embedded loopback,...

PT-2026-96796

Name of the Vulnerable Software and Affected Versions Cloudreve versions prior to 4.18.0 Description A privilege scope bypass exists in the admin API due to inconsistent middleware application in routers/router.go. While most state-changing admin tool routes require ScopeAdminWrite, the endpoints...

PT-2026-96798

Name of the Vulnerable Software and Affected Versions Cloudreve versions prior to 4.18.0 Description An authenticated user with remote-download access can perform a Server-Side Request Forgery SSRF by providing a specially crafted SrcUri through the RemoteDownloadTask.createDownloadTask function...

CVE-2026-79913: Server-Side Request Forgery (SSRF)

Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, the ValidateExternalURL server-side request forgery guard in pkg/request/ssrf.go passes resolved addresses to checkIP without decoding NAT64, IPv4-compatible, and 6to4 IPv4-in-IPv6 transition forms. An authenticated...

CVE-2026-77637: Missing Authorization

Cloudreve is a self-hosted file management and sharing system. Prior to 4.18.0, tool.GET"wopi" and tool.POST"mail" in routers/router.go inherit ScopeAdminRead but omit the RequiredScopestypes.ScopeAdminWrite middleware applied to neighboring state-changing admin tool routes. An OAuth application ...

CVE-2026-77633: Concurrent Execution using Shared Resource with Improper Synchronization

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 outside the same quota-enforcing transactio...

PT-2026-96795

Name of the Vulnerable Software and Affected Versions Cloudreve versions prior to 4.18.0 Description An authenticated user with Files.Write permission can exploit a Time-of-Check to Time-of-Use TOCTOU race condition in the PrepareUpload function within pkg/filemanager/fs/dbfs/upload.go. The syste...

SUSE CVE-2026-54563

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 to the account root with...

SUSE CVE-2026-55495

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-2026-55496

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 ...

SUSE CVE-2026-55497

Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the built-in thumbnail and avatar image decoders limit compressed file size but do not limit decoded pixel dimensions, allowing an authenticated user to submit a small PNG, JPEG, or GIF that triggers an unbounded...

SUSE CVE-2026-55499

Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, a single-file share event-stream subscription resolves the share root to the owner's parent folder and subscribes to that folder topic, allowing an authenticated share recipient to receive names, paths, rename targets...