CVE-2026-53959
4gaBoards: Mass Information Disclosure (Internal PII Leakage) on /api/users to any authenticated user
Description
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.
INFO
Published Date :
Aug. 18, 2026, 10:16 p.m.
Last Modified :
Oct. 22, 2026, 4:09 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update 4gaBoards to version 3.3.9 or later.
- Apply vendor patches for affected versions.
- Review access controls and authorization policies.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53959.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53959 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53959
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53959 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53959 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 22, 2026
Action Type Old Value New Value Added Translation Title: 4gaBoards de RARgames, Description: 4gaBoards es un sistema de tableros para la gestión de proyectos en tiempo real. Antes de la versión 3.3.9, 4gaBoards permite a cualquier usuario autenticado enumerar información de cuentas para cada usuario a través de GET /API/users y recuperar cuentas arbitrarias a través de GET /API/users/:id. Las acciones users/index y users/show se basan únicamente en la política predeterminada is-authenticated en server/config/policies.js, y server/API/controllers/users/index.js devuelve el resultado de sails.helpers.users.getMany() sin autorización específica del solicitante o sanitización de la respuesta. Las respuestas exponen email, teléfono, organización, nombre, isAdmin, ssoGoogleEmail, ssoGithubEmail y otros campos de correo electrónico vinculados a SSO, incluyendo datos para administradores. Esto permite la enumeración de usuarios a nivel de instancia, la pérdida de privacidad y el reconocimiento de phishing dirigido. Este problema está solucionado en la versión 3.3.9. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 21, 2026
Action Type Old Value New Value Added Reference https://github.com/RARgames/4gaBoards/security/advisories/GHSA-p77f-p47g-h72p Added SSVC {'id': 'CVE-2026-53959', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-21T19:49:46.338715Z'} -
New CVE Received by [email protected]
Aug. 18, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'RARgames', 'product': '4gaBoards', 'versions': [{'status': 'affected', 'version': '< 3.3.9'}]}] Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-200 Added Reference https://github.com/RARgames/4gaBoards/commit/93099d913cbfdbb1799b4aca19d2d0c2d2a276fb Added Reference https://github.com/RARgames/4gaBoards/releases/tag/v3.3.9 Added Reference https://github.com/RARgames/4gaBoards/security/advisories/GHSA-p77f-p47g-h72p