{"apiVersion":"1.0","identifier":"CVE-2026-50191","description":"4gaBoards is a boards system for realtime project management. Prior to 3.3.8, 4gaBoards is vulnerable to pre-account takeover when registrationEnabled, localRegistrationEnabled, and ssoRegistrationEnabled are enabled and Google, GitHub, Microsoft, or OIDC SSO is configured. The POST /api/register endpoint permits creation of an unverified local account with a victim-s email address, and POST /api/access-tokens permits that account to authenticate while isVerified is false. During the victim-s first SSO login, server/api/helpers/users/get-create-one-for-github-sso.js, server/api/helpers/users/get-create-one-for-google-sso.js, server/api/helpers/users/get-create-one-for-microsoft-sso.js, and server/api/helpers/users/get-create-one-for-oidc-sso.js find the attacker-controlled account by email and link the verified SSO identity without confirming ownership of the local account. The attacker can retain local-password access to the linked account and obtain the victim-s projects, data, and permissions. This issue is fixed in version 3.3.8.","publishedAt":"2026-08-18T22:16:52","lastModifiedAt":"2026-08-19T19:17:18","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-50191","cvssScore":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","epssProbability":0.00328,"riskScore":0.91,"affectedProduct":"4gaBoards","affectedVersions":"<3.3.8","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-50191","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-50191","en":"https://www.redsauce.net/en/cves/CVE-2026-50191","fr":"https://www.redsauce.net/fr/cves/CVE-2026-50191","pt":"https://www.redsauce.net/pt/cves/CVE-2026-50191","de":"https://www.redsauce.net/de/cves/CVE-2026-50191","sk":"https://www.redsauce.net/sk/cves/CVE-2026-50191","el":"https://www.redsauce.net/el/cves/CVE-2026-50191"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-50191"}}