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    <lastBuildDate>Wed, 30 Sep 2026 21:30:11 +0000</lastBuildDate>
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      <title>CVE-2026-50191 — 4gaBoards: Pre-Account Takeover via SSO Email Linkage</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-50191</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; RARgames 4gaBoards&lt;/p&gt;
&lt;p&gt;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&amp;#39;s email address, and POST /api/access-tokens permits that account to authenticate while isVerified is false. During the victim&amp;#39;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&amp;#39;s projects, data, and permissions. This issue is fixed in version 3.3.8.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; RARgames 4gaBoards&lt;/p&gt;
&lt;p&gt;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&amp;#39;s email address, and POST /api/access-tokens permits that account to authenticate while isVerified is false. During the victim&amp;#39;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&amp;#39;s projects, data, and permissions. This issue is fixed in version 3.3.8.&lt;/p&gt;</content:encoded>
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