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CVE details

CVE-2026-65100

Apache Traffic Server updates the HTTP/2 HPACK dynamic table before confirming the header block encoded successfully, so an encode failure leaves the encoder out of sync with the peer decoder and corrupts subsequent header blocks on the connection. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

Score
6.3 medium
Published
2026-07-29
Links
NVD · cve.org · Report wrong data

Matched ports (1)

PortPackageVersionStatusMaintainer
www/trafficservertrafficserver10.1.0unaddressedgaod@hychen.org

Template for a VuXML entry

Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>FIXME -- FIXME</topic>
    <affects>
      <package>
	<name>trafficserver</name>
	<range><lt>9.2.15</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>Apache Traffic Server updates the HTTP/2 HPACK dynamic table before
	confirming the header block encoded successfully, so an encode failure
	leaves the encoder out of sync with the peer decoder and corrupts
	subsequent header blocks on the connection.



This issue affects
	Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through
	9.2.14, from 10.0.0 through 10.1.3.



Users are recommended to
	upgrade to version 9.2.15 or 10.1.4, which fix the issue.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-65100</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-65100</url>
    </references>
    <dates>
      <discovery>2026-07-29</discovery>
      <entry>2026-10-26</entry>
    </dates>
  </vuln>