high7.5
CVE-2026-41205
Mako: Path traversal via double-slash URI prefix in TemplateLookup
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | Mako | <= 1.3.10 | 1.3.11 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Sqlalchemy | Mako | before 1.3.11 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-v92g-xgxw-vvmm
- https://github.com/sqlalchemy/mako/security/advisories/GHSA-v92g-xgxw-vvmm
- https://nvd.nist.gov/vuln/detail/CVE-2026-41205
- https://github.com/sqlalchemy/mako/commit/e05ac61989a7fb9dd7dcde6cfd72dc48328719a3
- https://github.com/sqlalchemy/mako/releases/tag/rel_1_3_11
- https://github.com/pypa/advisory-database/tree/main/vulns/mako/PYSEC-2026-88.yaml