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openSUSE Tomcat11 Important Security Update 2026-21121-1 CVE-2026-41284 DoS

opensuse
Calendar Grey June 30, 2026
Dist Opensuse Esm H88
Critical security update for openSUSE Leap 16.0 resolving important vulnerabilities in Tomcat 11, apply updates promptly.
An update that solves 7 vulnerabilities and has 7 bug fixes can now be installed.

Description

This update for tomcat11 fixes the following issues

Update to Tomcat 11.0.22:

- CVE-2026-41284: Unbounded read in WebDAV LOCK and PROPFIND handling (bsc#1265162).

- CVE-2026-41293: HTTP/2 request headers not validated (bsc#1265163).

- CVE-2026-42498: WebSocket authentication header exposure (bsc#1265165).

- CVE-2026-43512: digest authenticator will authenticate any unknown user (bsc#1265145).

- CVE-2026-43513: LockOutRealm treats user names as case-sensitive (bsc#1265166).

- CVE-2026-43514: AJP secret compared in non-constant time (bsc#1265167).

- CVE-2026-43515: Security constraints not correctly applied (bsc#1265168).

Changes:

* Catalina

+ Add: Enhance version.sh and version.bat to display APR, Tomcat Native, and

OpenSSL version information (both APR and FFM implementations), along with

version compatibility warnings and third-party library version

information. (csutherl)

+ Code: Refactor generation of the remote user element in the access log to

remove unnecessary code....

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory important authentication OpenSUSE websocket tomcat11

Patch

Package List

- openSUSE Leap 16.0:

tomcat11-11.0.22-160000.1.1

tomcat11-admin-webapps-11.0.22-160000.1.1

tomcat11-doc-11.0.22-160000.1.1

tomcat11-docs-webapp-11.0.22-160000.1.1

tomcat11-el-6_0-api-11.0.22-160000.1.1

tomcat11-embed-11.0.22-160000.1.1

tomcat11-jsp-4_0-api-11.0.22-160000.1.1

tomcat11-jsvc-11.0.22-160000.1.1

tomcat11-lib-11.0.22-160000.1.1

tomcat11-servlet-6_1-api-11.0.22-160000.1.1

tomcat11-webapps-11.0.22-160000.1.1

References

* bsc#1265145

* bsc#1265162

* bsc#1265163

* bsc#1265165

* bsc#1265166

* bsc#1265167

* bsc#1265168

References:

* https://www.suse.com/security/cve/CVE-2026-41284.html

* https://www.suse.com/security/cve/CVE-2026-41293.html

* https://www.suse.com/security/cve/CVE-2026-42498.html

* https://www.suse.com/security/cve/CVE-2026-43512.html

* https://www.suse.com/security/cve/CVE-2026-43513.html

* https://www.suse.com/security/cve/CVE-2026-43514.html

* https://www.suse.com/security/cve/CVE-2026-43515.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2026:21121-1
Rating: important
Affected Products: openSUSE Leap 16.0 -------------------------------------------------------------

Topics%20covered

Topics Covered

security advisory important authentication OpenSUSE websocket tomcat11

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