OPENSUSE-SU-2026:21811-1: tomcat11 security update

OPENSUSE-SU-2026:21811-1, released September 8, 2026, fixes 12 CVEs in tomcat11 (version 11.0.25-160000.1.1). None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

4 rated Critical

Exploited

None reported

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.0076

55th percentile

Priority of the 12 CVEs

Patch now 0
                                Urgent 4
                                High 6
                                Routine 2

Fixed package versions

Product	Release	Fixed in
tomcat11	opensuse-leap 16.0	11.0.25-160000.1.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2026-65905	tomcat: Apache Tomcat: Limited replay attack possible with DIGEST authentication (bsc#1276896).	9.8	0.0076	None reported
Urgent	CVE-2026-65637	tomcat: Apache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - fix incomplete (bsc#1276895).	9.8	0.0075	None reported
Urgent	CVE-2026-65182	tomcat: Apache Tomcat: Bypass longest prefix security constraint (bsc#1276893).	9.1	0.0065	None reported
Urgent	CVE-2026-68525	tomcat: Apache Tomcat: Redirect after FORM auth may bypass method specific constraints (bsc#1276899).	9.1	0.0064	None reported
High	CVE-2026-68763	tomcat: Apache Tomcat: DoS via allocation leak in HTTP/2 backlog tracking when a stream is reset	8.2	0.0075	None reported
High	CVE-2026-65927	tomcat: Apache Tomcat: RewriteValve [N] restarts at the second rule and may bypass access control	8.2	0.0068	None reported
High	CVE-2026-68569	tomcat: Apache Tomcat: Principal lookup can fail open in some cases (bsc#1276900).	8.2	0.0046	None reported
High	CVE-2026-66422	tomcat: Apache Tomcat: Servlet role references can bypass declarative role constraints (bsc#1276898).	8.1	0.0043	None reported
High	CVE-2026-65183	tomcat: Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets (bsc#1276894).	8.1	0.0040	None reported
High	CVE-2026-32990	tomcat: The fix for CVE-2025-66614 was incomplete, so this CVE completes it (bsc#1258371).	7.3	0.0031	None reported
Routine	CVE-2026-66299	tomcat9: Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example	5.3	0.0055	None reported
Routine	CVE-2026-73180	tomcat: Apache Tomcat: Authenticated WebSocket session survives end of HTTP session (bsc#1276902).	6.8	0.0044	None reported

Also fixes CVE-2026-65905

ALAS2023-2026-3151
tomcat11, tomcat11-admin-webapps, tomcat11-docs-webapp and 5 more on amzn 2023
RHSA-2026:73981
jws6-tomcat on RHEL 10
OPENSUSE-SU-2026:21823-1
tomcat on opensuse-leap 16.0
SUSE-SU-2026:23720-1
tomcat on sles 16.0
SUSE-SU-2026:23710-1
tomcat11 on sles 16.0
SUSE-SU-2026:23711-1
tomcat10 on sles 16.0
OPENSUSE-SU-2026:21810-1
tomcat10 on opensuse-leap 16.0
SUSE-SU-2026:4203-1
tomcat on sles 15.6, sles 15.7

Vendor advisory

https://osv.dev/vulnerability/openSUSE-SU-2026:21811-1

For tools and AI agents

This page as data: JSON · Markdown

Link to this page

If this page saved you time, a link to it in your ticket, advisory or write-up helps others find it.

HTML

<a href="https://patchblox.com/security/fix/linux/opensuse-su-2026-21811-1">OPENSUSE-SU-2026:21811-1 on Patchblox Patch Radar</a>

Reusing the data? How to credit Patch Radar.

Which servers are still behind?

Patchblox compares the installed package on every Linux machine against the fixed version for its release, including machines reported through Azure Update Manager.

Get a demo

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.