CVE-2026-41205
High
Description
Mako is a template library written in Python. Prior to 1.3.11, TemplateLookup.get_template() is vulnerable to path traversal when a URI starts with // (e.g., //../../../secret.txt). The root cause is an inconsistency between two slash-stripping implementations. Any file readable by the process can be returned as rendered template content when an application passes untrusted input directly to TemplateLookup.get_template(). This vulnerability is fixed in 1.3.11.
SeverityHigh
CVSS7.5
Exploit probability—
ProductSqlalchemy Mako
PublishedApr 23, 2026
First seenApr 23, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- sqlalchemy mako1.3.11 or later
- mako1.3.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sqlalchemy mako | v < 1.3.11 | 1.3.11 |
| makoPyPI | v < 1.3.11 | 1.3.11 |
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