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      <title>CVE-2026-39413 — LightRAG has a JWT Algorithm Confusion Vulnerability in LightRAG API</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-39413</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; HKUDS LightRAG&lt;/p&gt;
&lt;p&gt;LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.4.14, the LightRAG API is vulnerable to a JWT algorithm confusion attack where an attacker can forge tokens by specifying &amp;#39;alg&amp;#39;: &amp;#39;none&amp;#39; in the JWT header. Since the jwt.decode() call does not explicitly deny the &amp;#39;none&amp;#39; algorithm, a crafted token without a signature will be accepted as valid, leading to unauthorized access. This vulnerability is fixed in 1.4.14.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; HKUDS LightRAG&lt;/p&gt;
&lt;p&gt;LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.4.14, the LightRAG API is vulnerable to a JWT algorithm confusion attack where an attacker can forge tokens by specifying &amp;#39;alg&amp;#39;: &amp;#39;none&amp;#39; in the JWT header. Since the jwt.decode() call does not explicitly deny the &amp;#39;none&amp;#39; algorithm, a crafted token without a signature will be accepted as valid, leading to unauthorized access. This vulnerability is fixed in 1.4.14.&lt;/p&gt;</content:encoded>
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