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    <title>Most recent entries from all</title>
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    <lastBuildDate>Wed, 30 Sep 2026 07:48:05 +0000</lastBuildDate>
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      <title>CVE-2026-1225 — Malicious logback.xml configuration file allows instantiation of arbitrary classes</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-1225</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; QOS.CH Sarl Logback-core&lt;/p&gt;
&lt;p&gt;ACE vulnerability in configuration file processing  by QOS.CH logback-core up to and including version 1.5.24 in Java applications, allows an attacker to instantiate classes already present on the class path by compromising an existing logback configuration file.&lt;/p&gt;
&lt;p&gt;The instantiation of a potentially malicious Java class requires that said class is present on the user&amp;#39;s class-path. In addition, the attacker must  have write access to a 
configuration file. However, after successful instantiation, the instance is very likely to be discarded with no further ado.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; QOS.CH Sarl Logback-core&lt;/p&gt;
&lt;p&gt;ACE vulnerability in configuration file processing  by QOS.CH logback-core up to and including version 1.5.24 in Java applications, allows an attacker to instantiate classes already present on the class path by compromising an existing logback configuration file.&lt;/p&gt;
&lt;p&gt;The instantiation of a potentially malicious Java class requires that said class is present on the user&amp;#39;s class-path. In addition, the attacker must  have write access to a 
configuration file. However, after successful instantiation, the instance is very likely to be discarded with no further ado.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-1225</guid>
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