Ubuntu 26.04 python-mako Medium Info Exposure Vuln 2026-41205

ubuntu

May 5, 2026

Mako could be made to expose sensitive information over the network.

Summary

Mako could be made to expose sensitive information over the network.

Software Description:

- mako: fast and lightweight templating for the Python platform

Details:

It was discovered that Mako incorrectly handled URIs with double-slash

prefixes in TemplateLookup. A remote attacker could possibly use this issue

to obtain sensitive information.

Topics Covered

security advisory network security Ubuntu information exposure medium python-mako

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
  python3-mako                    1.3.10-3ubuntu0.1

Ubuntu 25.10
  python3-mako                    1.3.9-1ubuntu0.1

Ubuntu 24.04 LTS
  python3-mako                    1.3.2-1ubuntu0.1

Ubuntu 22.04 LTS
  python3-mako                    1.1.3+ds1-2ubuntu0.2

Ubuntu 20.04 LTS
  python-mako                     1.1.0+ds1-1ubuntu2.1+esm1
                                  Available with Ubuntu Pro
  python3-mako                    1.1.0+ds1-1ubuntu2.1+esm1
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  python-mako                     1.0.7+ds1-1ubuntu0.2+esm1
                                  Available with Ubuntu Pro
  python3-mako                    1.0.7+ds1-1ubuntu0.2+esm1
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  python-mako                     1.0.3+ds1-1ubuntu1+esm2
                                  Available with Ubuntu Pro
  python3-mako                    1.0.3+ds1-1ubuntu1+esm2
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.