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CVE-2023-28447

HighPublished

Cross site scripting vulnerability in Javascript escaping in smarty/smarty

Published: Mar 28, 2023
Updated: Nov 3, 2025
Assigning CNA: GitHub_M
Evidence observed: Aug 8, 2026

Primary CVSS

7.1/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

EPSS probability estimate

1.0%

Low · next 30 days

Percentile: 61.6%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Smarty is a template engine for PHP. In affected versions smarty did not properly escape javascript code. An attacker could exploit this vulnerability to execute arbitrary JavaScript code in the context of the user's browser session. This may lead to unauthorized access to sensitive user data, manipulation of the web application's behavior, or unauthorized actions performed on behalf of the user. Users are advised to upgrade to either version 3.1.48 or to 4.3.1 to resolve this issue. There are no known workarounds for this vulnerability.

Sources

lblfixer_cve_2023_28447Patch
Module for PrestaShop 1.7.X to fix CVE-2023-28447 vulnerability (Smarty XSS)

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