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    <lastBuildDate>Wed, 21 Oct 2026 05:29:41 +0000</lastBuildDate>
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      <title>CVE-2026-112179 — MISP Event Synchronization Exposes Non-Exportable Tags on Remote Instances</title>
      <link>https://db.gcve.eu/vuln/cve-2026-112179</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; MISP&lt;/p&gt;
&lt;p&gt;In MISP, the event synchronization process contained a logic error in the preparation of event reports for remote push. The filtering of non-exportable tags was applied only once after the iteration over all reports, rather than to each individual report.&lt;/p&gt;
&lt;p&gt;As a result:&lt;/p&gt;
&lt;p&gt;- All reports except the last one in the set were pushed to the remote MISP instance with their non-exportable tags intact, effectively disclosing restricted tag information to the receiving instance.&lt;/p&gt;
&lt;p&gt;- When the last report in the set was withheld (empty), a null report was pushed, causing the remote instance to fail saving the event.&lt;/p&gt;
&lt;p&gt;This issue affects any MISP instance configured to push events with multiple reports to a remote server via synchronization.&lt;/p&gt;
&lt;p&gt;Affected: &amp;lt;2.5.48.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; MISP&lt;/p&gt;
&lt;p&gt;In MISP, the event synchronization process contained a logic error in the preparation of event reports for remote push. The filtering of non-exportable tags was applied only once after the iteration over all reports, rather than to each individual report.&lt;/p&gt;
&lt;p&gt;As a result:&lt;/p&gt;
&lt;p&gt;- All reports except the last one in the set were pushed to the remote MISP instance with their non-exportable tags intact, effectively disclosing restricted tag information to the receiving instance.&lt;/p&gt;
&lt;p&gt;- When the last report in the set was withheld (empty), a null report was pushed, causing the remote instance to fail saving the event.&lt;/p&gt;
&lt;p&gt;This issue affects any MISP instance configured to push events with multiple reports to a remote server via synchronization.&lt;/p&gt;
&lt;p&gt;Affected: &amp;lt;2.5.48.&lt;/p&gt;</content:encoded>
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