Detections
Analytics

Echo: mako: security update to 1.4.2

medium Tenable Cloud Security Plugin ID 473559

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Mako is a template library written in Python. Prior to 1.4.2, on Windows, TemplateLookup.get_template() in
 mako/lookup.py resolves template URIs with posixpath, while Template.__init__() in mako/template.py
 validates them with os.path, which uses ntpath. A URI beginning with a drive designator causes ntpath to
 absorb the traversal segments before the leading dot-dot check, while posixpath resolution can escape the
 configured template directory. An application that passes attacker-controlled template names or include
 paths can disclose process-readable files on the same volume, and a targeted file containing Mako template
 syntax may also be parsed and executed as a template. Raw URL paths are generally normalized before
 reaching this form, but query strings, form or JSON bodies, route parameters, and dynamic include
 expressions can preserve it. This issue is fixed in version 1.4.2. (CVE-2026-102991)

Solution

Update the mako library and its related packages to version 1.4.2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-102991

Plugin Details

Severity: Medium

ID: 473559

Version: Revision 1.1

Type: Local

Published: 10/7/2026

Updated: 10/7/2026

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 51.45

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:P/A:N

CVSS Score Source: CVE-2026-102991

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/7/2026

Vulnerability Publication Date: 9/30/2026

Reference Information

CVE: CVE-2026-102991