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Open-source package vulnerability · Composer (PHP)

CVE-2026-44212: PrestaShop has a stored XSS executable in customer service view

criticalCVSS 3.1 9.3GHSA-w9f3-qc75-qgx9

Impact This is a stored Cross-site Scripting (XSS) vulnerability in the PrestaShop back-office Customer Service view. An unauthenticated attacker can submit the public Contact Us form with a malicious email address. The payload is stored in the database and executed when a back-office employee opens the affected customer thread, enabling session hijacking and full back-office takeover.

Published May 8, 2026

Affected packages

prestashop/prestashop

Ecosystem
Composer (PHP)
Affected
< 8.2.6
Fixed in
8.2.6
Check
composer show prestashop/prestashop

prestashop/prestashop

Ecosystem
Composer (PHP)
Affected
>= 9.0.0, < 9.1.1
Fixed in
9.1.1
Check
composer show prestashop/prestashop

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Impact

This is a stored Cross-site Scripting (XSS) vulnerability in the PrestaShop back-office Customer Service view.

An unauthenticated attacker can submit the public Contact Us form with a malicious email address. The payload is stored in the database and executed when a back-office employee opens the affected customer thread, enabling session hijacking and full back-office takeover.

Patches

Patched in PrestaShop 8.2.6 and 9.1.1.

Workarounds

None.

Resources

  • Reported by Savio at Doyensec ([email protected]) in collaboration with Anthropic Research.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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