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vulnerability / NVI-00015196 / Revision 1

Cloudreve: Information Exposure in `GET /api/v4/user/search`: `SearchActive` omits the active-status predicate, leaking inactive/banned account emails

GitHub lists this reviewed advisory for github.com/cloudreve/Cloudreve/v4, github.com/cloudreve/Cloudreve/v3. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.

source listedactiveGHSA-8r7f-r8hj-r3rvCVE-2026-55496

This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.

01 / Meaning

Why it matters

Published affected context helps an owner decide what evidence to gather. This report has not examined your application.

CVSS

4.3 medium

GitHub source severity; exploitability and local consequence require separate evidence.

As of · GitHub Advisory Database

02 / Applicability

The affected context

Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.

github.com/cloudreve/Cloudreve/v4

source listed
  • < 4.0.0-20260613023921-7e1289d55279

## Summary `GET /api/v4/user/search` is available to any logged-in user. 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. A normal logged-in user can therefore enumerate and retrieve the email (plus nickname, avatar, creation time, redacted group, profile share-visibility) of **inactive and banned** accounts that an active-user directory is supposed to suppress. No global status interceptor compensates — the only User query interceptor is soft-delete, and inactive/banned rows are not soft-deleted. ### Details ## Root cause (verified at `26b6b10`) **1. Route — logged-in + `UserInfo.Read` scope** (`routers/router.go`): ```go user := v4.Group("user") // protected user group (login required) user.GET("search", middleware.RequiredScopes(types.ScopeUserInfoRead), controllers.FromQueryusersvc.SearchUserService, controllers.UserSearch) ``` The `RequiredScopes

GitHub Advisory Database

github.com/cloudreve/Cloudreve/v3

source listed
  • <= 3.0.0-20250225100611-da4e44b77af4

## Summary `GET /api/v4/user/search` is available to any logged-in user. 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. A normal logged-in user can therefore enumerate and retrieve the email (plus nickname, avatar, creation time, redacted group, profile share-visibility) of **inactive and banned** accounts that an active-user directory is supposed to suppress. No global status interceptor compensates — the only User query interceptor is soft-delete, and inactive/banned rows are not soft-deleted. ### Details ## Root cause (verified at `26b6b10`) **1. Route — logged-in + `UserInfo.Read` scope** (`routers/router.go`): ```go user := v4.Group("user") // protected user group (login required) user.GET("search", middleware.RequiredScopes(types.ScopeUserInfoRead), controllers.FromQueryusersvc.SearchUserService, controllers.UserSearch) ``` The `RequiredScopes

GitHub Advisory Database

03 / Response

What to do next

  1. investigate

    Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.

    Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database

A fixed release is not deployment evidence.

Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.

04 / Limits

What this report cannot establish

  • Customer inventory, deployment, reachability and exploitation have not been inspected.
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05 / Provenance

Sources you can inspect

Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.

  1. GHSA-8r7f-r8hj-r3rv ↗

    GitHub Advisory Database · vendor advisory

    Observed . GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.

Public revision history

Only published revisions appear here. Routine fetches do not create a material-change event.

  1. Revision 1 ·

    First indexed by Null; source disclosure date is shown separately.

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The next step is private

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