sqlalchemy mako up to 1.3.11 TemplateLookup.get_template path traversal

Summaryinfo

A vulnerability, which was classified as critical, has been found in sqlalchemy mako up to 1.3.11. Affected by this issue is the function TemplateLookup.get_template. Performing a manipulation results in path traversal. This vulnerability is identified as CVE-2026-44307. The attack can be initiated remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in sqlalchemy mako up to 1.3.11. This affects the function TemplateLookup.get_template. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-44307 since 05/05/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 1.3.12 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 72e10c573ca0fbcbddd4455abca8ce92a61780d7 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• sqlalchemy

Name

• mako

Version

• 1.3.0
• 1.3.1
• 1.3.2
• 1.3.3
• 1.3.4
• 1.3.5
• 1.3.6
• 1.3.7
• 1.3.8
• 1.3.9
• 1.3.10
• 1.3.11

License

• open-source

Website

• Product: https://github.com/sqlalchemy/mako/

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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