Hi,

The following vulnerability was published for mako.

CVE-2026-41205[0]:
| Mako is a template library written in Python. Prior to 1.3.11,
| TemplateLookup.get_template() is vulnerable to path traversal when a
| URI starts with // (e.g., //../../../secret.txt). The root cause is
| an inconsistency between two slash-stripping implementations. Any
| file readable by the process can be returned as rendered template
| content when an application passes untrusted input directly to
| TemplateLookup.get_template(). This vulnerability is fixed in
| 1.3.11.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-41205
https://www.cve.org/CVERecord?id=CVE-2026-41205
[1] https://github.com/sqlalchemy/mako/security/advisories/GHSA-v92g-xgxw-vvmm

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore