Stored XSS Vulnerability in PrestaShop Affecting Versions Prior to 8.2.5 and 9.1.0
CVE-2026-33673

7.7HIGH

Key Information:

Vendor

Prestashop

Status
Prestashop
Vendor
CVE Published:
26 March 2026

What is CVE-2026-33673?

PrestaShop, a widely used open-source e-commerce web application, is susceptible to stored Cross-Site Scripting (XSS) vulnerabilities in its back-office interface. Specifically, any version prior to 8.2.5 and 9.1.0 is at risk. The vulnerability allows attackers with limited access to inject harmful data into the database, exploiting unprotected variables within back-office templates. While upgrades to versions 8.2.5 and 9.1.0 address this issue, no known workarounds exist for these vulnerable versions.

Affected Version(s)

PrestaShop >= 9.0.0-alpha.1, < 9.1.0 < 9.0.0-alpha.1, 9.1.0

PrestaShop < 8.2.5 < 8.2.5

References

https://github.com/PrestaShop/PrestaShop/security/advisor...
x_refsource_CONFIRM
https://github.com/PrestaShop/PrestaShop/releases/tag/8.2.5
x_refsource_MISC
https://github.com/PrestaShop/PrestaShop/releases/tag/9.1.0
x_refsource_MISC

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
High
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.