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Vulnerability · Published Apr 25, 2023 · Assigned by GitHub_M

CVE-2023-30838PrestaShop vulnerable to possible XSS injection through Validate::isCleanHTML method

High 8.6

In plain English

A high-severity cross-site scripting in PrestaShop from PrestaShop. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.6High
Exploit odds (30 days)1.0%top 35.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

PrestaShop is an Open Source e-commerce web application. Prior to versions 8.0.4 and 1.7.8.9, the `ValidateCore::isCleanHTML()` method of Prestashop misses hijackable events which can lead to cross-site scripting (XSS) injection, allowed by the presence of pre-setup `@keyframes` methods. This XSS, which hijacks HTML attributes, can be triggered without any interaction by the visitor/administrator, which makes it as dangerous as a trivial XSS attack. Contrary to other attacks which target HTML attributes and are triggered without user interaction (such as onload / onerror which suffer from a very limited scope), this one can hijack every HTML element, which increases the danger due to a complete HTML elements scope. Versions 8.0.4 and 1.7.8.9 contain a fix for this issue.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Packagistprestashop/prestashop8.0.4GHSA-fh7r-996q-gvcp
Packagistprestashop/prestashop1.7.8.9GHSA-fh7r-996q-gvcp

Affected products (as reported)

VendorProductVersions
PrestaShop PrestaShop >= 8.0.0, < 8.0.4< 1.7.8.9

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

References