---
id: CVE-2026-53958
title: 4gaBoards is a boards system for realtime project management
summary: >-
  4gaBoards is a boards system for realtime project management. Prior to 3.3.9,
  4gaBoards allows an authenticated user to modify ssoGoogleId, ssoGoogleEmail,
  ssoGithubId, ssoGithubUsername, ssoGithubEmail, ssoMicrosoftId,
  ssoMicrosoftEmail…
severity: high
cvss: 7.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L'
cwe:
  - CWE-287
  - CWE-915
published: '2026-08-18'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:13:25.910'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53958'
references:
  - url: >-
      https://github.com/RARgames/4gaBoards/commit/7a79f4c5d338614058515752abd67e49ee2818bb
    label: security-advisories@github.com
  - url: 'https://github.com/RARgames/4gaBoards/releases/tag/v3.3.9'
    label: security-advisories@github.com
  - url: >-
      https://github.com/RARgames/4gaBoards/security/advisories/GHSA-j2fw-r2gj-hfr3
    label: security-advisories@github.com
  - url: >-
      https://github.com/RARgames/4gaBoards/security/advisories/GHSA-j2fw-r2gj-hfr3
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00396
epssPercentile: 0.31089
ingestedAt: '2026-09-09T21:22:45.538Z'
---

## Overview

4gaBoards is a boards system for realtime project management. Prior to 3.3.9, 4gaBoards allows an authenticated user to modify ssoGoogleId, ssoGoogleEmail, ssoGithubId, ssoGithubUsername, ssoGithubEmail, ssoMicrosoftId, ssoMicrosoftEmail, ssoOidcId, and ssoOidcEmail through PATCH /api/users/:id. The whitelist in server/api/controllers/users/update.js mass assigns these backend-managed identity attributes from user input. An attacker can place a victim's provider identifier on an attacker-controlled account, causing the default lookup in helpers such as server/api/helpers/users/get-create-one-for-github-sso.js to match the victim's first SSO login to the attacker's account before the email-linkage flow runs. The victim is logged into the attacker-controlled account, and projects, boards, or data the victim creates remain accessible through the attacker's original local credentials. This issue is fixed in version 3.3.9.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.