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8.7 High

Mako is a template library written in Python.

CVE-2026-44307

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.gettemplate(), allowing reads of files outside the configured template directory. This vulnerability is fixed in 1.3.12.

Assessment

CVSS
8.7 (v4.0)
Severity
High
EPSS
0.74% chance of exploitation in the next 30 days
Known exploited
Not listed in CISA KEV
Exploit availability
Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published
12 May 2026
Last updated
26 October 2026
Affected
sqlalchemy · mako
Weakness
CWE-22
Assigner
security-advisories@github.com

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

At the source

References

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