Bug 2524166 (CVE-2026-68763) - CVE-2026-68763 tomcat: Apache Tomcat: Denial of Service via HTTP/2 allocation leak
Summary: CVE-2026-68763 tomcat: Apache Tomcat: Denial of Service via HTTP/2 allocation...
Keywords:
Status: NEW
Alias: CVE-2026-68763
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-25 22:11 UTC by OSIDB Bzimport
Modified: 2026-11-02 04:40 UTC (History)
10 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:73981 0 None None None 2026-10-01 22:11:35 UTC
Red Hat Product Errata RHSA-2026:73982 0 None None None 2026-10-01 16:24:30 UTC
Red Hat Product Errata RHSA-2026:76952 0 None None None 2026-10-07 13:32:42 UTC
Red Hat Product Errata RHSA-2026:76956 0 None None None 2026-10-07 13:31:15 UTC
Red Hat Product Errata RHSA-2026:92862 0 None None None 2026-10-29 22:29:06 UTC
Red Hat Product Errata RHSA-2026:92863 0 None None None 2026-10-29 22:12:48 UTC
Red Hat Product Errata RHSA-2026:92870 0 None None None 2026-10-29 22:23:29 UTC
Red Hat Product Errata RHSA-2026:92871 0 None None None 2026-10-29 22:23:43 UTC
Red Hat Product Errata RHSA-2026:92872 0 None None None 2026-10-29 22:26:17 UTC
Red Hat Product Errata RHSA-2026:93469 0 None None None 2026-11-02 04:40:34 UTC

Description OSIDB Bzimport 2026-08-25 22:11:21 UTC 
Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset



This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120.



The following versions were EOL at the time the CVE was created but are 
known to be affected: from 8.5.59 through 8.5.100. Other unsupported versions may also be affected.



Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
Comment 3 Jon Orris 2026-10-01 16:24:29 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Web Server 6.2.5

Via RHSA-2026:73982 https://access.redhat.com/errata/RHSA-2026:73982
Comment 4 Jon Orris 2026-10-01 22:11:34 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Web Server 6.2 on RHEL 10
  Red Hat JBoss Web Server 6.2 on RHEL 8
  Red Hat JBoss Web Server 6.2 on RHEL 9

Via RHSA-2026:73981 https://access.redhat.com/errata/RHSA-2026:73981
Comment 5 Jon Orris 2026-10-07 13:31:14 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Web Server 7.0.2

Via RHSA-2026:76956 https://access.redhat.com/errata/RHSA-2026:76956
Comment 6 Jon Orris 2026-10-07 13:32:41 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Web Server 7.0 on RHEL 10
  Red Hat JBoss Web Server 7.0 on RHEL 8
  Red Hat JBoss Web Server 7.0 on RHEL 9

Via RHSA-2026:76952 https://access.redhat.com/errata/RHSA-2026:76952
Comment 7 Jon Orris 2026-10-29 22:12:46 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:92863 https://access.redhat.com/errata/RHSA-2026:92863
Comment 8 Jon Orris 2026-10-29 22:23:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:92870 https://access.redhat.com/errata/RHSA-2026:92870
Comment 9 Jon Orris 2026-10-29 22:23:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:92871 https://access.redhat.com/errata/RHSA-2026:92871
Comment 10 Jon Orris 2026-10-29 22:26:15 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:92872 https://access.redhat.com/errata/RHSA-2026:92872
Comment 11 Jon Orris 2026-10-29 22:29:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:92862 https://access.redhat.com/errata/RHSA-2026:92862
Comment 12 Jon Orris 2026-11-02 04:40:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:93469 https://access.redhat.com/errata/RHSA-2026:93469
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