SB20260428216 - Path traversal in Mako
Published: April 28, 2026
Security Bulletin ID
SB20260428216
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Path traversal (CVE-ID: CVE-2026-41205)
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to path traversal in TemplateLookup.get_template() when processing a URI that starts with a double-slash prefix. A remote attacker can supply a specially crafted template URI to disclose sensitive information.
Exploitation requires an application to pass untrusted input directly to the vulnerable API, and HTTP-based exploitation depends on a server that does not normalize double-slash-prefixed paths.
Remediation
Install update from vendor's website.