Cloudreve: Inactive/banned account emails leaked via GET /api/v4/user/search because SearchActive() omits the active-status predicate

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Summary

CVECVE-2026-55496
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-31 04:17:22 UTC
Updated2026-07-31 14:16:50 UTC
DescriptionCloudreve 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.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS: 0.003610000 probability, percentile 0.288210000 (date 2026-08-03)

Problem Types: CWE-200 | CWE-359 | CWE-200 CWE-200: Exposure of Sensitive Information to an Unauthorized Actor | CWE-359 CWE-359: Exposure of Private Personal Information to an Unauthorized Actor

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Cloudreve Cloudreve affected 4.17.0 Not specified

References

ReferenceSourceLinkTags
github.com/cloudreve/cloudreve/commit/7e1289d552794bdbeb551be78456115c87... [email protected] github.com
github.com/cloudreve/cloudreve/releases/tag/4.17.0 [email protected] github.com
github.com/cloudreve/cloudreve/security/advisories/GHSA-8r7f-r8hj-r3rv 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
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