CVE-2026-44307 — Mako: Path traversal via backslash URI on Windows in TemplateLookup
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 Te…
Published: 2026-05-12 · CVSS: 8.7 · CVSS 4.0
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 Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7