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    <lastBuildDate>Wed, 07 Oct 2026 22:52:25 +0000</lastBuildDate>
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      <title>CVE-2024-54137 — liboqs has a correctness error in HQC decapsulation</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2024-54137</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; open-quantum-safe liboqs, open_quantum_safe liboqs&lt;/p&gt;
&lt;p&gt;liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms. A correctness error has been identified in the reference implementation of the HQC key encapsulation mechanism. Due to an indexing error, part of the secret key is incorrectly treated as non-secret data. This results in an incorrect shared secret value being returned when the decapsulation function is called with a malformed ciphertext. This vulnerability is fixed in 0.12.0.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; open-quantum-safe liboqs, open_quantum_safe liboqs&lt;/p&gt;
&lt;p&gt;liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms. A correctness error has been identified in the reference implementation of the HQC key encapsulation mechanism. Due to an indexing error, part of the secret key is incorrectly treated as non-secret data. This results in an incorrect shared secret value being returned when the decapsulation function is called with a malformed ciphertext. This vulnerability is fixed in 0.12.0.&lt;/p&gt;</content:encoded>
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