{"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":0.00353,"epssPercentile":0.28909,"ingestedAt":"2026-09-09T21:22:45.538Z","slug":"CVE-2026-53958","body":"## Overview\n\n4gaBoards 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}