Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/cloudreve/cloudreve/commit/7e1289d552794bdbeb551be78456115c87
- https://github.com/cloudreve/cloudreve/releases/tag/4.17.0
- https://github.com/cloudreve/cloudreve/security/advisories/GHSA-8r7f-r8hj-r3rv
- https://github.com/cloudreve/cloudreve/security/advisories/GHSA-8r7f-r8hj-r3rv
FAQ
What is CVE-2026-55496?
CVE-2026-55496 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 RedactLevel...
How severe is CVE-2026-55496?
CVE-2026-55496 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-55496?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.