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    <lastBuildDate>Mon, 26 Oct 2026 08:29:42 +0000</lastBuildDate>
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      <title>CVE-2026-110863 — Better Auth @better-auth/sso before 1.7.3 Authentication Bypass via Personal SSO Providers</title>
      <link>https://db.gcve.eu/vuln/cve-2026-110863</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; better-auth sso&lt;/p&gt;
&lt;p&gt;Better Auth @better-auth/sso from 1.7.0-rc.2 before 1.7.3 contains an authentication bypass vulnerability that allows authenticated users to sign in as other users by registering a personal SSO provider. Attackers can copy a legitimate provider&amp;#39;s OIDC issuer or SAML entity ID and assert a victim&amp;#39;s subject or NameID, because account lookup ignores providerId, creating sessions for victim accounts.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; better-auth sso&lt;/p&gt;
&lt;p&gt;Better Auth @better-auth/sso from 1.7.0-rc.2 before 1.7.3 contains an authentication bypass vulnerability that allows authenticated users to sign in as other users by registering a personal SSO provider. Attackers can copy a legitimate provider&amp;#39;s OIDC issuer or SAML entity ID and assert a victim&amp;#39;s subject or NameID, because account lookup ignores providerId, creating sessions for victim accounts.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://db.gcve.eu/vuln/cve-2026-110863</guid>
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