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CVE details

CVE-2026-91080

webhook through 2.8.3 reads the entire request body into memory before evaluating trigger rules, allowing unauthenticated attackers to exhaust memory by sending oversized bodies. Attackers can send multi-gigabyte request bodies with invalid signatures to trigger out-of-memory conditions and crash the service.

Score
8.7 high
Published
2026-09-14
Links
NVD · cve.org

Matched ports (1)

PortPackageVersionStatusMaintainer
www/webhookwebhook2.8.2_21unaddressedstb@lassitu.de

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>webhook</name>
	<range><lt>FIXME</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>webhook through 2.8.3 reads the entire request body into memory before
	evaluating trigger rules, allowing unauthenticated attackers to
	exhaust memory by sending oversized bodies. Attackers can send
	multi-gigabyte request bodies with invalid signatures to trigger
	out-of-memory conditions and crash the service.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-91080</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-91080</url>
    </references>
    <dates>
      <discovery>2026-09-14</discovery>
      <entry>2026-10-26</entry>
    </dates>
  </vuln>