high8.7
CVE-2026-44307
Mako vulnerable to path traversal via backslash URI on Windows in TemplateLookup
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | Mako | <= 1.3.11 | 1.3.12 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-2h4p-vjrc-8xpq
- 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
- https://github.com/sqlalchemy/mako/releases/tag/rel_1_3_12
- https://nvd.nist.gov/vuln/detail/CVE-2026-44307