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      <title>CVE-2026-45338 — Open WebUI: SSRF via OAuth Profile Picture URL in _process_picture_url (oauth.py)</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-45338</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; open-webui&lt;/p&gt;
&lt;p&gt;Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a Server-Side Request Forgery (SSRF) vulnerability exists in _process_picture_url() in backend/open_webui/utils/oauth.py (line ~1338). The function fetches arbitrary URLs from OAuth picture claims without applying validate_url(), allowing an attacker to force the server to make HTTP requests to internal resources and exfiltrate the full response. This vulnerability is fixed in 0.9.0.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; open-webui&lt;/p&gt;
&lt;p&gt;Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a Server-Side Request Forgery (SSRF) vulnerability exists in _process_picture_url() in backend/open_webui/utils/oauth.py (line ~1338). The function fetches arbitrary URLs from OAuth picture claims without applying validate_url(), allowing an attacker to force the server to make HTTP requests to internal resources and exfiltrate the full response. This vulnerability is fixed in 0.9.0.&lt;/p&gt;</content:encoded>
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