CVE-2026-55496 Details
Description
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.
A vulnerability in Cloudreve prior to version 4.17.0 allows logged-in users to access email addresses and profile information of inactive or banned accounts through the user search API. The issue arises because the 'SearchActive' method fails to filter by active status, inadvertently exposing this information. The vulnerability is present in versions prior to 4.17.0.
Users are advised to update to Cloudreve version 4.17.0 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 31, 2026CISA-ADP
Assessed Jul 31, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/cloudreve/cloudreve/security/advisories/GHSA-8r7f-r8hj-r3rv | CISA-ADP | AdvisoryRemedyVendor |
| https://github.com/cloudreve/cloudreve/commit/7e1289d552794bdbeb551be78456115c87dcb3da | [email protected] | Source CodeVendor |
| https://github.com/cloudreve/cloudreve/releases/tag/4.17.0 | [email protected] | Release NotesVendor |
| https://github.com/cloudreve/cloudreve/security/advisories/GHSA-8r7f-r8hj-r3rv | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-200 | Exposure of Sensitive Information to an Unauthorized Actor | [email protected] |
| CWE-359 | Exposure of Private Personal Information to an Unauthorized Actor | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Cloudreve | < 4.16.1 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 31, 2026 | CVE Modified | CISA-ADP |
| Jul 31, 2026 | New CVE Received | [email protected] |