Vulnerability in MyPresta Google Merchant Center Feed software
Vulnerability in MyPresta Google Merchant Center Feed software
| CVE ID | CVE-2026-85520 |
| Publication date | 29 September 2026 |
| Vendor | MyPresta |
| Product | Google Merchant Center Feed |
| Vulnerable versions | From 1.9.1 through 2.3.8 |
| Vulnerability type (CWE) | External control of file name or path (CWE-73) |
| Report source | Report to CERT Polska |
Description
CERT Polska has received a report about vulnerability in MyPresta Google Merchant Center Feed software and participated in coordination of its disclosure.
The vulnerability CVE-2026-85520: Google Merchant Center Feed (gmfeed) module for PrestaShop is vulnerable to unauthenticated arbitrary file write in the feed.php endpoint. An unauthenticated attacker can send a crafted request that controls the output file name, path, extension, and content through request parameters. Due to the lack of authentication and input validation, the request is processed successfully, allowing an attacker to write and execute arbitrary PHP code, resulting in remote code execution (RCE).
This issue was fixed in version 2.3.9.
Credits
We thank Today Group sp. z o.o. for the responsible vulnerability report.
More about the coordinated vulnerability disclosure process at CERT Polska can be found at https://cert.pl/en/cvd/.