CVE-2023-39527: PrestaShop XSS injection through Validate::isCleanHTML method

high Affects prestashop/prestashop. Feed 2026.10.29.1, updated 2026-10-28; published 2023-08-09; advisory modified 2026-07-16.

PrestaShop XSS injection through Validate::isCleanHTML method

Package: prestashop/prestashop Composer
Affected versions: >=8.1.0 and <8.1.1 or >=8.0.0 and <8.0.5 or <1.7.8.10
Fixed in: 8.1.1, 8.0.5, 1.7.8.10
Severity: high CVSS 8.3
Exploitation: not on CISA KEV · EPSS 1% (43.6th percentile)
Published: 2023-08-09
Source: osv.dev

References

CWE-116

NVD record prestashop/prestashop advisories

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden deps composer.lock

# or, without Composer
pipx install phpwarden   &&   phpwarden deps composer.lock

Or keep it checked automatically: GitHub Action · pre-commit hook · GitLab CI · Laravel artisan command

Install docs How findings are ranked

Related advisories

CVE-2024-34716 critical PrestaShop cross-site scripting via customer contact form in FO, through file upload same package: prestashop/prestashop
CVE-2022-31181 critical PrestaShop eval injection possible if shop vulnerable to SQL injection same package: prestashop/prestashop
CVE-2021-43789 high SQL injection in prestashop/prestashop same package: prestashop/prestashop
CVE-2018-20717 high PrestaShop PHP Object Injection same package: prestashop/prestashop
CVE-2022-21686 critical Server Side Twig Template Injection same package: prestashop/prestashop
CVE-2023-30839 critical SQL filter bypass leading to arbitrary write requests using "SQL Manager" same package: prestashop/prestashop