The Apache Software Foundation takes a very active stance in eliminating
security problems and denial of service attacks against Apache Tomcat.
We strongly encourage folks to report such problems to our private
security mailing list first, before disclosing them in a public forum.
Please note that the security mailing list should only be used
for reporting undisclosed security vulnerabilities in Apache Tomcat and
managing the process of fixing such vulnerabilities. We cannot accept
regular bug reports or other queries at this address. All mail sent to
this address that does not relate to an undisclosed security problem in
the Apache Tomcat source code will be ignored.
If you need to report a bug that isn't an undisclosed security
vulnerability, please use the bug reporting
- how to configure Tomcat securely
- if a vulnerability applies to your particular application
- obtaining further information on a published vulnerability
- availability of patches and/or new releases
should be addressed to the users mailing list. Please see the
mailing lists page for details of how to
The private security mailing address is:
Note that all networked servers are subject to denial of service attacks,
and we cannot promise magic workarounds to generic problems (such as a
client streaming lots of data to your server, or re-requesting the same
URL repeatedly). In general our philosophy is to avoid any attacks which
can cause the server to consume resources in a non-linear relationship to
the size of inputs.