Medium severity · published Mar 26, 2026
CVE-2026-33673
PrestaShop has multiple stored XSS vulnerabilities via unprotected Template variables
5.4
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PR
PrestaShop · PrestaShop
>= 9.0.0-alpha.1, < 9.1.0; < 8.2.5 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33673
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33673
Release Notes
https://github.com/PrestaShop/PrestaShop/releases/tag/8.2.5
Release Notes
https://github.com/PrestaShop/PrestaShop/releases/tag/9.1.0
Vendor Advisory
https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-35pf-37c6-jxjv
More from PrestaShop
9.9
CVE-2023-30838
PrestaShop vulnerable to possible XSS injection through Validate::isCleanHTML method
9.8
CVE-2024-34989
In the module RSI PDF/HTML catalog evolution (prestapdf) <= 7.0.0 from RSI for PrestaShop, a guest can perform SQL injection via…
9.8
CVE-2024-33276
SQL Injection vulnerability in FME Modules preorderandnotication v.3.1.0 and before allows a remote attacker to run arbitrary SQL commands via the…
9.8
CVE-2024-25845
In the module "CD Custom Fields 4 Orders" (cdcustomfields4orders) <= 1.0.0 from Cleanpresta.com for PrestaShop, a guest can perform SQL injection in affected versions
9.8
CVE-2023-39526
PrestaShopSQL manager vulnerability (potential RCE)