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    <lastBuildDate>Mon, 28 Sep 2026 18:27:59 +0000</lastBuildDate>
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      <title>CVE-2026-87022 — Apache Tomcat: WebSocket message smuggling with per-message-deflate</title>
      <link>https://db.gcve.eu/vuln/cve-2026-87022</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Apache Software Foundation Apache Tomcat&lt;/p&gt;
&lt;p&gt;Improper handling of length parameter inconsistency vulnerability in Apache Tomcat allows WebSocket message smuggling when per-message-deflate is used.&lt;/p&gt;
&lt;p&gt;This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.&lt;/p&gt;
&lt;p&gt;The following versions were EOS at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.56 through 7.0.109. Other unsupported versions may also be affected.&lt;/p&gt;
&lt;p&gt;Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.1.22, which fix the issue.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Apache Software Foundation Apache Tomcat&lt;/p&gt;
&lt;p&gt;Improper handling of length parameter inconsistency vulnerability in Apache Tomcat allows WebSocket message smuggling when per-message-deflate is used.&lt;/p&gt;
&lt;p&gt;This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.&lt;/p&gt;
&lt;p&gt;The following versions were EOS at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.56 through 7.0.109. Other unsupported versions may also be affected.&lt;/p&gt;
&lt;p&gt;Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.1.22, which fix the issue.&lt;/p&gt;</content:encoded>
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