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Alerts This Week
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Debian LTS DLA-4619-1 Tomcat9 Security Advisory for Multiple Risks

debian lts
Calendar Grey June 6, 2026
Dist Debian Esm H88
Multiple vulnerabilities in Tomcat 9 require urgent updates in Debian LTS to prevent information leaks and service disruptions.
Multiple security vulnerabilities have been discovered in Tomcat 9, a Java based web server, servlet and JSP engine which may result in a denial of service, authentication bypass o...
Topics%20covered

Topics Covered

security advisory denial of service tomcat authentication bypass sensitive information deblts

Summary

In order to address certain vulnerabilities and restore the compatibility with
Tomcat 9, an upgrade of the Tomcat native library, libtcnative-1, was required
as well.

Although we are not aware of any problems, new upstream versions may introduce
new options, limits or code changes which may or may not affect your existing
web applications. We recommend to consult the Tomcat 9 documentation for
further information.

For Debian 11 bullseye, these problems have been fixed in version
9.0.118-0+deb11u1.

We recommend that you upgrade your tomcat9 packages.

For the detailed security status of tomcat9 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/tomcat9

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS



Severity
critical
Lowest
Low
Medium
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Critical

Package: tomcat9
Version: 9.0.118-0+deb11u1
CVE ID: CVE-2026-24880 CVE-2026-25854 CVE-2026-29129 CVE-2026-29145

Topics%20covered

Topics Covered

security advisory denial of service tomcat authentication bypass sensitive information deblts

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