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    <lastBuildDate>Mon, 19 Oct 2026 08:18:22 +0000</lastBuildDate>
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      <title>CVE-2026-77205 — Denial of Service via sending bogus X.509 certificates</title>
      <link>https://db.gcve.eu/vuln/cve-2026-77205</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; The Libreswan Project libreswan&lt;/p&gt;
&lt;p&gt;Libreswan in FIPS mode has a vulnerability where badly formed received certificates are rejected, but not deleted from the NSS cache. As a result, any real certificates with the same serial number are rejected as well. This can be abused to lock out legitimate peers from connecting. The add_decoded_cert() function missed a call to CERT_DestroyCertificate() due to an incorrect fix for CVE-2026-14957. Sending bogus certificates with new serial numbers could prevent the real certificates with those serial numbers from connecting until the service has restarted.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; The Libreswan Project libreswan&lt;/p&gt;
&lt;p&gt;Libreswan in FIPS mode has a vulnerability where badly formed received certificates are rejected, but not deleted from the NSS cache. As a result, any real certificates with the same serial number are rejected as well. This can be abused to lock out legitimate peers from connecting. The add_decoded_cert() function missed a call to CERT_DestroyCertificate() due to an incorrect fix for CVE-2026-14957. Sending bogus certificates with new serial numbers could prevent the real certificates with those serial numbers from connecting until the service has restarted.&lt;/p&gt;</content:encoded>
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