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CVE-2026-53959

4gaBoards: Mass Information Disclosure (Internal PII Leakage) on /api/users to any authenticated user

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 3.3.9
1 Metasploit module, 1 proof of concept on GitHub
  • Exploitation: poc
  • Automatable: no
  • Technical impact: partial

Summary

4gaBoards is a boards system for realtime project management. Prior to 3.3.9, 4gaBoards allows any authenticated user to enumerate account information for every user through GET /api/users and retrieve arbitrary accounts through GET /api/users/:id. The users/index and users/show actions rely only on the default is-authenticated policy in server/config/policies.js, and server/api/controllers/users/index.js returns the result of sails.helpers.users.getMany() without requester-specific authorization or response sanitization. Responses expose email, phone, organization, name, isAdmin, ssoGoogleEmail, ssoGithubEmail, and other SSO-linked email fields, including data for administrators. This enables instance-wide user enumeration, privacy loss, and targeted phishing reconnaissance. This issue is fixed in version 3.3.9.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • RARgames 4gaBoards

    fixed in 3.3.9

References 5

GitHub · RARgames/4gaBoards

GitHub · rapid7/metasploit-framework

GitHub · anirbala98/CVE-2026-53959