RARgames 4gaBoards up to 3.3.8 SSO Identity Management update.js access control

Summaryinfo

A vulnerability categorized as critical has been discovered in RARgames 4gaBoards up to 3.3.8. This affects an unknown part of the file server/api/controllers/users/update.js of the component SSO Identity Management. The manipulation of the argument ssoGoogleId/ssoGoogleEmail/ssoGithubId/ssoGithubUsername/ssoGithubEmail/ssoMicrosoftId/ssoMicrosoftEmail/ssoOidcId/ssoOidcEmail results in access control. This vulnerability is cataloged as CVE-2026-53958. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in RARgames 4gaBoards up to 3.3.8. It has been classified as critical. Affected is an unknown functionality of the file server/api/controllers/users/update.js of the component SSO Identity Management. The manipulation of the argument ssoGoogleId/ssoGoogleEmail/ssoGithubId/ssoGithubUsername/ssoGithubEmail/ssoMicrosoftId/ssoMicrosoftEmail/ssoOidcId/ssoOidcEmail with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-53958 since 06/11/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 3.3.9 eliminates this vulnerability.

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Productinfo

Type

• Forum Software

Vendor

• RARgames

Name

• 4gaBoards

Version

• 3.3.0
• 3.3.1
• 3.3.2
• 3.3.3
• 3.3.4
• 3.3.5
• 3.3.6
• 3.3.7
• 3.3.8

Website

• Product: https://github.com/RARgames/4gaBoards/

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