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    <lastBuildDate>Wed, 21 Oct 2026 08:32:19 +0000</lastBuildDate>
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      <title>CVE-2026-87865 — knownhost callback mismatches key as missing</title>
      <link>https://db.gcve.eu/vuln/cve-2026-87865</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; curl&lt;/p&gt;
&lt;p&gt;When libcurl uses libssh2 with a hashed `known_hosts` file, an unrelated
initial entry can cause host key validation to report a key *mismatch* as a
*missing* key to the `CURLOPT_SSH_KEYFUNCTION` callback.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; curl&lt;/p&gt;
&lt;p&gt;When libcurl uses libssh2 with a hashed `known_hosts` file, an unrelated
initial entry can cause host key validation to report a key *mismatch* as a
*missing* key to the `CURLOPT_SSH_KEYFUNCTION` callback.&lt;/p&gt;</content:encoded>
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