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      <title>GHSA-9x4v-xfq5-m8x5 — Better Auth URL parameter HTML Injection (Reflected Cross-Site scripting)</title>
      <link>https://vulnerability.circl.lu/vuln/ghsa-9x4v-xfq5-m8x5</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; npm: better-auth&lt;/p&gt;
&lt;p&gt;### Summary
The better-auth `/api/auth/error` page was vulnerable to HTML injection, resulting in a reflected cross-site scripting (XSS) vulnerability.&lt;/p&gt;
&lt;p&gt;### Details
The value of `error` URL parameter was reflected as HTML on the error page: https://github.com/better-auth/better-auth/blob/05ada0b79dbcac93cc04ceb79b23ca598d07830c/packages/better-auth/src/api/routes/error.ts#L81&lt;/p&gt;
&lt;p&gt;### Impact
An attacker who exploited this vulnerability by coercing a user to visit a specially-crafted URL could execute arbitrary JavaScript in the context of the user&amp;#39;s browser.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; npm: better-auth&lt;/p&gt;
&lt;p&gt;### Summary
The better-auth `/api/auth/error` page was vulnerable to HTML injection, resulting in a reflected cross-site scripting (XSS) vulnerability.&lt;/p&gt;
&lt;p&gt;### Details
The value of `error` URL parameter was reflected as HTML on the error page: https://github.com/better-auth/better-auth/blob/05ada0b79dbcac93cc04ceb79b23ca598d07830c/packages/better-auth/src/api/routes/error.ts#L81&lt;/p&gt;
&lt;p&gt;### Impact
An attacker who exploited this vulnerability by coercing a user to visit a specially-crafted URL could execute arbitrary JavaScript in the context of the user&amp;#39;s browser.&lt;/p&gt;</content:encoded>
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