The current minimum versions are:
- OpenSSL 1.1.1 
- APR 1.6.3

The following version of the libraries are recommended:

- APR 1.7.6 or later, http://apr.apache.org
- OpenSSL 3.0.19 or later, http://www.openssl.org

Older versions should also work but are not as thoroughly tested by the Tomcat
Native team


The minimum version of OpenSSL is driven by the version of OpenSSL used by
downstream distributions. EOL dates exclude paid support offerings. 

The current state of OpenSSL in Debian is:
- OpenSSL 1.1.1w in Debian 11 LTS (EOL end August 2026)
- OpenSSL 3.0.17 in Debian 12 LTS (EOL end June 2028)

And in Ubuntu:
- OpenSSL 3.0.2  in Ubuntu 22.04 LTS (EOL in April 2027)
- OpenSSL 3.0.13 in Ubuntu 24.04 LTS (EOL in April 2029)

The minimum version of APR is driven by the version of APR used by
downstream distributions.

The current state of APR in Debian is:
- APR 1.7.0 in Debian 11 (EOL end August 2026)
- APR 1.7.2 in Debian 12 (EOL end June 2028)

And in Ubuntu:
- APR 1.7.0 in Ubuntu 22.04 LTS (EOL in April 2027)
- APR 1.7.2 in Ubuntu 24.04 LTS (EOL in April 2029)
