CVE-2026-44307

Name	CVE-2026-44307
Description	Mako is a template library written in Python. Prior to 1.3.12, on Windows, a URI using backslash traversal (e.g. \..\..\ secret.txt) bypasses the directory traversal check in Template.__init__ and the posixpath-based normalization in TemplateLookup.get_template(), allowing reads of files outside the configured template directory. This vulnerability is fixed in 1.3.12.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
mako (PTS)	bullseye	1.1.3+ds1-2	fixed
	bullseye (security)	1.1.3+ds1-2+deb11u1	fixed
	bookworm	1.2.4+ds-1	fixed
	trixie	1.3.9-1	fixed
	forky, sid	1.3.10-3	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
mako	source	(unstable)	(not affected)

Notes

- mako <not-affected> (Only affects Mako on Windows)
https://github.com/sqlalchemy/mako/security/advisories/GHSA-2h4p-vjrc-8xpq
https://github.com/sqlalchemy/mako/issues/435
https://github.com/sqlalchemy/mako/commit/72e10c573ca0fbcbddd4455abca8ce92a61780d7 (rel_1_3_12)