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GHSA-m983-7426-5hrj

MediumCVSS 5.3 / 10
Published Mar 24, 2026·Last modified Mar 30, 2026
Affected Components(0)

No affected components available

Description

Summary

A public access-control flaw allows unauthenticated users to retrieve the full user list from GET /api/allusers. This exposes user profile metadata to anyone who can reach the application and enables remote user enumeration.

Details

The vulnerable route is registered as a public endpoint:

  • internal/router/user.go:17
    • appRouterGroup.PublicRouterGroup.GET("/allusers", h.UserHandler.GetAllUsers())

However, the handler appears to have been intended as an authenticated endpoint:

  • internal/handler/user/user.go:177-185
    • API annotations indicate an authentication requirement via @Security ApiKeyAuth

This creates a mismatch between the documented security model and the actual routing configuration. As a result, requests to GET /api/allusers succeed without authentication and return user records, including profile metadata such as usernames, email addresses, role-related flags, avatar values, and locale information.

A negative control against another endpoint that correctly requires authentication further supports that this exposure is unintended: GET /api/user returns 401 Unauthorized when no token is supplied, while GET /api/allusers remains publicly accessible.

Impact

  • Type: Access control bypass / unauthenticated data exposure
  • Who is impacted: Any deployment exposing the API to untrusted networks, and all users whose profile metadata is returned by the endpoint
  • Security impact: Enables remote user enumeration and disclosure of user profile metadata, which may facilitate account reconnaissance, phishing, and targeted credential attacks
  • Attack preconditions: None beyond network access to the affected API endpoint
Risk Scores
Base Score
5.3

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information.

Threat Intelligence
4.9

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.48%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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