XSS in Prestashop
CVE-2026-33673
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (31.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Prestashop — versions >= 9.0.0-alpha.1, < 9.1.0, < 8.2.5
Weakness classification (CWE)
References
- github.com/PrestaShop/PrestaShop/security/advisories/GHSA-35pf-37c6-jxjv (Vendor Advisory)
- github.com/PrestaShop/PrestaShop/releases/tag/8.2.5 (Release Notes)
- github.com/PrestaShop/PrestaShop/releases/tag/9.1.0 (Release Notes)
Frequently asked questions
- What is CVE-2026-33673?
- CVE-2026-33673 is a high-severity vulnerability in Prestashop, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2026-03-26.
- How severe is CVE-2026-33673?
- High severity. CVSS v3 base score is 7.6 out of 10.