What’s Vulnerable › Vulnerabilities

CVE-2026-33673: PrestaShop has multiple stored XSS vulnerabilities via unprotected Template variables

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-26 · updated 2026-06-17
• Weakness: CWE-79

Description

PrestaShop is an open source e-commerce web application. Versions prior to 8.2.5 and 9.1.0 are vulnerable to stored Cross-Site Scripting (stored XSS) vulnerabilities in the BO. An attacker who can inject data into the database, via limited back-office access or a previously existing vulnerability, can exploit unprotected variables in back-office templates. Versions 8.2.5 and 9.1.0 contain a fix. No known workarounds are available.

Affected products

• PrestaShop: before 8.2.5; from 9.0.0 before 9.1.0 — fixed in 8.2.5, 9.1.0

How to fix

Upgrade to a fixed version: PrestaShop 8.2.5, 9.1.0. Check the vendor advisory for mitigations.

References

• https://github.com/PrestaShop/PrestaShop/releases/tag/8.2.5
• https://github.com/PrestaShop/PrestaShop/releases/tag/9.1.0
• https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-35pf-37c6-jxjv

Get alerted when CVE-2026-33673 or the next vulnerability affects your stack