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34 vulnerabilities by Cloudreve
CVE-2026-101056 (GCVE-0-2026-101056)
Vulnerability from nvd – Published: 2026-09-27 17:02 – Updated: 2026-09-28 13:17
VLAI
EPSS
VEX
Title
Cloudreve before 4.16.1 Authentication Bypass via Cached Context Hint
Summary
Cloudreve before 4.16.1 fails to revalidate share access when restoring cached navigator state from a context_hint UUID. Attackers who previously had valid share access can replay the cached hint to generate signed file URLs for up to 300 seconds after the share is deleted, expires, or reaches zero remaining downloads.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 13:16 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | vendor-advisory |
| https://www.vulncheck.com/advisories/cloudreve-be… | third-party-advisory |
Impacted products
Date Public
2026-06-13 00:00
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CVE-2026-101051 (GCVE-0-2026-101051)
Vulnerability from nvd – Published: 2026-09-27 17:02 – Updated: 2026-09-28 14:06
VLAI
EPSS
VEX
Title
Cloudreve before 4.16.1 Path Traversal via Remote Download
Summary
Cloudreve before 4.16.1 fails to properly sanitize file paths returned by remote downloaders, allowing authenticated users to create files outside the selected destination directory. Attackers can exploit path traversal sequences in downloader metadata to write files to unexpected locations within accessible namespaces.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 14:05 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | vendor-advisory |
| https://www.vulncheck.com/advisories/cloudreve-be… | third-party-advisory |
Impacted products
Date Public
2026-06-13 00:00
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CVE-2026-101048 (GCVE-0-2026-101048)
Vulnerability from nvd – Published: 2026-09-27 17:02 – Updated: 2026-09-30 15:30
VLAI
EPSS
VEX
Title
Cloudreve before 4.17.0 SSRF via Admin.Read OAuth scope
Summary
Cloudreve before 4.17.0 registers the administrative node test endpoints (POST /api/v4/admin/node/test and POST /api/v4/admin/node/test/downloader) without requiring the Admin.Write OAuth scope, unlike the node create/update/delete routes. An OAuth client that has been authorized by an administrator with only the Admin.Read scope can therefore submit attacker-controlled node definitions and cause the Cloudreve server to issue outbound requests to arbitrary URLs, enabling blind server-side request forgery, internal service probing, and delivery of signed Cloudreve slave-style requests to attacker-chosen endpoints.
Severity
5.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 15:30 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | vendor-advisory |
| https://www.vulncheck.com/advisories/cloudreve-be… | third-party-advisory |
Impacted products
Date Public
2026-07-23 00:00
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CVE-2026-79913 (GCVE-0-2026-79913)
Vulnerability from nvd – Published: 2026-09-22 15:24 – Updated: 2026-09-22 17:44
VLAI
EPSS
VEX
Title
Cloudreve: SSRF guard bypass: checkIP does not decode IPv6-transition wrappers (NAT64, IPv4-compatible, 6to4) reaching internal and cloud-metadata addresses
Summary
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 user with remote-download access can provide SrcUri through RemoteDownloadTask.createDownloadTask so a wrapper embedding a loopback, private, link-local, or cloud metadata IPv4 address is classified as public and fetched, exposing internal service responses and cloud instance credentials. IPv4-mapped IPv6 addresses remain blocked because Go converts that form with net.IP.To4. This issue is fixed in version 4.18.0.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 17:33 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/1c5… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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}
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CVE-2026-77637 (GCVE-0-2026-77637)
Vulnerability from nvd – Published: 2026-09-22 15:30 – Updated: 2026-09-22 17:43
VLAI
EPSS
VEX
Title
Cloudreve: Privilege Scope Bypass: State-Mutating Admin Operations Accessible via Read-Only OAuth Scope
Summary
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 RequiredScopes(types.ScopeAdminWrite) middleware applied to neighboring state-changing admin tool routes. An OAuth application or API key limited to Admin.Read can therefore probe configured WOPI service endpoints and send arbitrary test email through the server SMTP configuration, exceeding the token's intended read-only authorization boundary. This issue is fixed in version 4.18.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 17:33 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/bce… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-77633 (GCVE-0-2026-77633)
Vulnerability from nvd – Published: 2026-09-22 15:28 – Updated: 2026-09-25 23:38
VLAI
EPSS
VEX
Title
Cloudreve: Storage-quota TOCTOU race allows quota bypass and storage-based denial of service
Summary
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 transaction. An authenticated user with Files.Write permission can issue concurrent upload-session requests that read the same capacity snapshot, all pass the MaxStorage check, and reserve their declared sizes through CommitWithStorageDiff. The resulting reservations can exceed the account quota and can be materialized as chunked uploads that exhaust host storage and deny uploads to other users. The default local-storage policy and default User group are affected. This issue is fixed in version 4.18.0.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 23:38 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/732… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-62323 (GCVE-0-2026-62323)
Vulnerability from nvd – Published: 2026-07-31 03:43 – Updated: 2026-07-31 19:28
VLAI
EPSS
VEX
Title
Cloudreve: Unauthorized file write via WOPI view sessions whose access token secret is ignored
Summary
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 suffix and invoke WOPI write routes for the underlying file. This issue is fixed in version 4.17.0.
Severity
6.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 19:27 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/f33… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-55502 (GCVE-0-2026-55502)
Vulnerability from nvd – Published: 2026-07-31 03:35 – Updated: 2026-07-31 11:09
VLAI
EPSS
VEX
Title
Cloudreve: OAuth Admin.Read scope can update OneDrive storage policy credentials
Summary
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 token without Admin.Write to modify storage policy credentials. The route is inside the admin group that requires Admin.Read, but it does not add the local Admin.Write guard used by sibling policy mutation routes. Its handler persists attacker-supplied secret and app_id values into the selected OneDrive storage policy before returning an OAuth URL. This issue is fixed in version 4.17.0.
Severity
7.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 11:08 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
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CVE-2026-55499 (GCVE-0-2026-55499)
Vulnerability from nvd – Published: 2026-07-31 03:34 – Updated: 2026-07-31 23:15
VLAI
EPSS
VEX
Title
Cloudreve: Broken access control in file event stream leaks activity events for unshared siblings to single-file share recipients
Summary
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, event types, and hashed identifiers for unshared sibling files and folders. This issue is fixed in version 4.17.0.
Severity
4.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 23:14 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/0b0… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-55497 (GCVE-0-2026-55497)
Vulnerability from nvd – Published: 2026-07-31 03:28 – Updated: 2026-07-31 15:58
VLAI
EPSS
VEX
Title
Cloudreve: Server crash through image decompression/pixel bomb in thumbnail & avatar decoding (DoS)
Summary
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 allocation and terminates the Cloudreve process through fatal out-of-memory behavior. This issue is fixed in version 4.17.0.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 15:57 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/360… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-55496 (GCVE-0-2026-55496)
Vulnerability from nvd – Published: 2026-07-31 03:23 – Updated: 2026-07-31 14:02
VLAI
EPSS
VEX
Title
Cloudreve: Inactive/banned account emails leaked via GET /api/v4/user/search because SearchActive() omits the active-status predicate
Summary
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 or banned accounts. 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, defined a few lines above it, do. Search hits are serialized at RedactLevelUser, which includes the email address. This issue is fixed in version 4.17.0.
Severity
4.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 14:00 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/7e1… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-55495 (GCVE-0-2026-55495)
Vulnerability from nvd – Published: 2026-07-31 02:58 – Updated: 2026-07-31 19:27
VLAI
EPSS
VEX
Title
Cloudreve: Path Traversal in WOPI PUT_RELATIVE Allows Arbitrary File Creation in Owner Account
Summary
Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the WOPI PUT_RELATIVE 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 files elsewhere in the same owner account. This issue is fixed in version 4.17.0.
Severity
4.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 19:26 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/796… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-54563 (GCVE-0-2026-54563)
Vulnerability from nvd – Published: 2026-07-15 14:38 – Updated: 2026-07-15 15:34
VLAI
EPSS
VEX
Title
Cloudreve: Path Traversal / Broken Access Control in Cloudreve WebDAV (`/dav`) — scoped DAV credential escapes its configured account root
Summary
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 fs.URI.JoinRaw without checking containment, allowing the scoped credential to read and list files outside the configured folder and writable credentials to create, overwrite, move, or delete them. This issue is reported as fixed in version 4.16.1.
Severity
7.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 15:33 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
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CVE-2026-54562 (GCVE-0-2026-54562)
Vulnerability from nvd – Published: 2026-07-15 14:37 – Updated: 2026-07-15 15:00
VLAI
EPSS
VEX
Title
Cloudreve: Non-admin remote download users can SSRF loopback/internal services and read imported responses
Summary
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 redirect-to-loopback targets, allowing a non-admin user with remote download permission to fetch internal-only URLs and read the response after it is imported into the user's own files. This issue is fixed in version 4.16.1.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 15:00 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/aae… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-54560 (GCVE-0-2026-54560)
Vulnerability from nvd – Published: 2026-07-15 14:40 – Updated: 2026-07-15 15:16
VLAI
EPSS
VEX
Title
Cloudreve: OAuth access tokens bypass scope enforcement due to missing client_id claim
Summary
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.
Severity
7.6 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 15:16 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/ed2… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
Impacted products
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CVE-2026-101056 (GCVE-0-2026-101056)
Vulnerability from cvelistv5 – Published: 2026-09-27 17:02 – Updated: 2026-09-28 13:17
VLAI
EPSS
VEX
Title
Cloudreve before 4.16.1 Authentication Bypass via Cached Context Hint
Summary
Cloudreve before 4.16.1 fails to revalidate share access when restoring cached navigator state from a context_hint UUID. Attackers who previously had valid share access can replay the cached hint to generate signed file URLs for up to 300 seconds after the share is deleted, expires, or reaches zero remaining downloads.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 13:16 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | vendor-advisory |
| https://www.vulncheck.com/advisories/cloudreve-be… | third-party-advisory |
Impacted products
Date Public
2026-06-13 00:00
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CVE-2026-101051 (GCVE-0-2026-101051)
Vulnerability from cvelistv5 – Published: 2026-09-27 17:02 – Updated: 2026-09-28 14:06
VLAI
EPSS
VEX
Title
Cloudreve before 4.16.1 Path Traversal via Remote Download
Summary
Cloudreve before 4.16.1 fails to properly sanitize file paths returned by remote downloaders, allowing authenticated users to create files outside the selected destination directory. Attackers can exploit path traversal sequences in downloader metadata to write files to unexpected locations within accessible namespaces.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 14:05 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | vendor-advisory |
| https://www.vulncheck.com/advisories/cloudreve-be… | third-party-advisory |
Impacted products
Date Public
2026-06-13 00:00
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CVE-2026-101048 (GCVE-0-2026-101048)
Vulnerability from cvelistv5 – Published: 2026-09-27 17:02 – Updated: 2026-09-30 15:30
VLAI
EPSS
VEX
Title
Cloudreve before 4.17.0 SSRF via Admin.Read OAuth scope
Summary
Cloudreve before 4.17.0 registers the administrative node test endpoints (POST /api/v4/admin/node/test and POST /api/v4/admin/node/test/downloader) without requiring the Admin.Write OAuth scope, unlike the node create/update/delete routes. An OAuth client that has been authorized by an administrator with only the Admin.Read scope can therefore submit attacker-controlled node definitions and cause the Cloudreve server to issue outbound requests to arbitrary URLs, enabling blind server-side request forgery, internal service probing, and delivery of signed Cloudreve slave-style requests to attacker-chosen endpoints.
Severity
5.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 15:30 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | vendor-advisory |
| https://www.vulncheck.com/advisories/cloudreve-be… | third-party-advisory |
Impacted products
Date Public
2026-07-23 00:00
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CVE-2026-77637 (GCVE-0-2026-77637)
Vulnerability from cvelistv5 – Published: 2026-09-22 15:30 – Updated: 2026-09-22 17:43
VLAI
EPSS
VEX
Title
Cloudreve: Privilege Scope Bypass: State-Mutating Admin Operations Accessible via Read-Only OAuth Scope
Summary
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 RequiredScopes(types.ScopeAdminWrite) middleware applied to neighboring state-changing admin tool routes. An OAuth application or API key limited to Admin.Read can therefore probe configured WOPI service endpoints and send arbitrary test email through the server SMTP configuration, exceeding the token's intended read-only authorization boundary. This issue is fixed in version 4.18.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 17:33 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/bce… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-77633 (GCVE-0-2026-77633)
Vulnerability from cvelistv5 – Published: 2026-09-22 15:28 – Updated: 2026-09-25 23:38
VLAI
EPSS
VEX
Title
Cloudreve: Storage-quota TOCTOU race allows quota bypass and storage-based denial of service
Summary
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 transaction. An authenticated user with Files.Write permission can issue concurrent upload-session requests that read the same capacity snapshot, all pass the MaxStorage check, and reserve their declared sizes through CommitWithStorageDiff. The resulting reservations can exceed the account quota and can be materialized as chunked uploads that exhaust host storage and deny uploads to other users. The default local-storage policy and default User group are affected. This issue is fixed in version 4.18.0.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 23:38 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/732… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-79913 (GCVE-0-2026-79913)
Vulnerability from cvelistv5 – Published: 2026-09-22 15:24 – Updated: 2026-09-22 17:44
VLAI
EPSS
VEX
Title
Cloudreve: SSRF guard bypass: checkIP does not decode IPv6-transition wrappers (NAT64, IPv4-compatible, 6to4) reaching internal and cloud-metadata addresses
Summary
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 user with remote-download access can provide SrcUri through RemoteDownloadTask.createDownloadTask so a wrapper embedding a loopback, private, link-local, or cloud metadata IPv4 address is classified as public and fetched, exposing internal service responses and cloud instance credentials. IPv4-mapped IPv6 addresses remain blocked because Go converts that form with net.IP.To4. This issue is fixed in version 4.18.0.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 17:33 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/1c5… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-62323 (GCVE-0-2026-62323)
Vulnerability from cvelistv5 – Published: 2026-07-31 03:43 – Updated: 2026-07-31 19:28
VLAI
EPSS
VEX
Title
Cloudreve: Unauthorized file write via WOPI view sessions whose access token secret is ignored
Summary
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 suffix and invoke WOPI write routes for the underlying file. This issue is fixed in version 4.17.0.
Severity
6.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 19:27 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/f33… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-55502 (GCVE-0-2026-55502)
Vulnerability from cvelistv5 – Published: 2026-07-31 03:35 – Updated: 2026-07-31 11:09
VLAI
EPSS
VEX
Title
Cloudreve: OAuth Admin.Read scope can update OneDrive storage policy credentials
Summary
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 token without Admin.Write to modify storage policy credentials. The route is inside the admin group that requires Admin.Read, but it does not add the local Admin.Write guard used by sibling policy mutation routes. Its handler persists attacker-supplied secret and app_id values into the selected OneDrive storage policy before returning an OAuth URL. This issue is fixed in version 4.17.0.
Severity
7.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 11:08 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
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CVE-2026-55499 (GCVE-0-2026-55499)
Vulnerability from cvelistv5 – Published: 2026-07-31 03:34 – Updated: 2026-07-31 23:15
VLAI
EPSS
VEX
Title
Cloudreve: Broken access control in file event stream leaks activity events for unshared siblings to single-file share recipients
Summary
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, event types, and hashed identifiers for unshared sibling files and folders. This issue is fixed in version 4.17.0.
Severity
4.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 23:14 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/0b0… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-55497 (GCVE-0-2026-55497)
Vulnerability from cvelistv5 – Published: 2026-07-31 03:28 – Updated: 2026-07-31 15:58
VLAI
EPSS
VEX
Title
Cloudreve: Server crash through image decompression/pixel bomb in thumbnail & avatar decoding (DoS)
Summary
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 allocation and terminates the Cloudreve process through fatal out-of-memory behavior. This issue is fixed in version 4.17.0.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 15:57 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/360… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-55496 (GCVE-0-2026-55496)
Vulnerability from cvelistv5 – Published: 2026-07-31 03:23 – Updated: 2026-07-31 14:02
VLAI
EPSS
VEX
Title
Cloudreve: Inactive/banned account emails leaked via GET /api/v4/user/search because SearchActive() omits the active-status predicate
Summary
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 or banned accounts. 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, defined a few lines above it, do. Search hits are serialized at RedactLevelUser, which includes the email address. This issue is fixed in version 4.17.0.
Severity
4.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 14:00 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/7e1… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-55495 (GCVE-0-2026-55495)
Vulnerability from cvelistv5 – Published: 2026-07-31 02:58 – Updated: 2026-07-31 19:27
VLAI
EPSS
VEX
Title
Cloudreve: Path Traversal in WOPI PUT_RELATIVE Allows Arbitrary File Creation in Owner Account
Summary
Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the WOPI PUT_RELATIVE 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 files elsewhere in the same owner account. This issue is fixed in version 4.17.0.
Severity
4.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 19:26 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/796… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-54560 (GCVE-0-2026-54560)
Vulnerability from cvelistv5 – Published: 2026-07-15 14:40 – Updated: 2026-07-15 15:16
VLAI
EPSS
VEX
Title
Cloudreve: OAuth access tokens bypass scope enforcement due to missing client_id claim
Summary
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.
Severity
7.6 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 15:16 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/ed2… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
Impacted products
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CVE-2026-54563 (GCVE-0-2026-54563)
Vulnerability from cvelistv5 – Published: 2026-07-15 14:38 – Updated: 2026-07-15 15:34
VLAI
EPSS
VEX
Title
Cloudreve: Path Traversal / Broken Access Control in Cloudreve WebDAV (`/dav`) — scoped DAV credential escapes its configured account root
Summary
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 fs.URI.JoinRaw without checking containment, allowing the scoped credential to read and list files outside the configured folder and writable credentials to create, overwrite, move, or delete them. This issue is reported as fixed in version 4.16.1.
Severity
7.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 15:33 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
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"title": "Cloudreve: Path Traversal / Broken Access Control in Cloudreve WebDAV (`/dav`) \u2014 scoped DAV credential escapes its configured account root"
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CVE-2026-54562 (GCVE-0-2026-54562)
Vulnerability from cvelistv5 – Published: 2026-07-15 14:37 – Updated: 2026-07-15 15:00
VLAI
EPSS
VEX
Title
Cloudreve: Non-admin remote download users can SSRF loopback/internal services and read imported responses
Summary
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 redirect-to-loopback targets, allowing a non-admin user with remote download permission to fetch internal-only URLs and read the response after it is imported into the user's own files. This issue is fixed in version 4.16.1.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 15:00 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/aae… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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