---
id: CVE-2026-103537
title: >-
  Thelia 2.6.1 contains an absolute path traversal vulnerability in its Smarty
  template handling that enables SSTI and remote code execution
summary: >-
  Thelia 2.6.1 contains an absolute path traversal vulnerability in its Smarty
  template handling that enables SSTI and remote code execution. The
  `checkTemplate()` validation restricts relative directory traversal sequences
  such as `../` b…
severity: none
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T15:17:06.667'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103537'
references:
  - url: 'https://kb.cert.org/vuls/id/162329'
    label: cret@cert.org
tags:
  - nvd
ingestedAt: '2026-10-12T15:55:08.156Z'
---

## Overview

Thelia 2.6.1 contains an absolute path traversal vulnerability in its Smarty template handling that enables SSTI and remote code execution. The `checkTemplate()` validation restricts relative directory traversal sequences such as `../` but does not reject absolute paths, allowing an authorized user to supply an arbitrary filesystem path as a template. Smarty then loads and compiles the referenced file without an effective security policy, so depending on filesystem layout and deployment configuration, template code in the file can be executed with the web server's privileges.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.