Bug 2524161 (CVE-2026-65905) - CVE-2026-65905 tomcat: Apache Tomcat: Authentication bypass via limited replay attack in DIGEST authenticator
Summary: CVE-2026-65905 tomcat: Apache Tomcat: Authentication bypass via limited repla...
Keywords:
Status: NEW
Alias: CVE-2026-65905
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-25 22:02 UTC by OSIDB Bzimport
Modified: 2026-10-07 13:32 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 22:11:31 UTC
Red Hat Product Errata RHSA-2026:73982 0 None None None 2026-10-01 16:24:24 UTC
Red Hat Product Errata RHSA-2026:76952 0 None None None 2026-10-07 13:32:38 UTC
Red Hat Product Errata RHSA-2026:76956 0 None None None 2026-10-07 13:31:12 UTC

Description OSIDB Bzimport 2026-08-25 22:02:25 UTC 
Authentication Bypass by Capture-replay vulnerability in Apache Tomcat's DIGEST authenticator. If, before windowSize requests have been made, a client makes a DIGEST 
authenticated request with a nonceCount on the upper boundary of the 
replay window then that request is replayable once only while the 
associated nonceCount remains within the replay window.



 

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120.



The following versions were EOL at the time the CVE was created but are 
known to be affected: from 8.5.0 through 8.5.100, from 7.0.30 through 7.0.109. 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 4 Jon Orris 2026-10-01 16:24:23 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 5 Jon Orris 2026-10-01 22:11:30 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 6 Jon Orris 2026-10-07 13:31:10 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 7 Jon Orris 2026-10-07 13:32:37 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
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