What’s Vulnerable › Vulnerabilities

CVE-2026-85520: Unauthenticated arbitrary file write leading to RCE in gmfeed PrestaShop module

• Severity: critical (CVSS 9.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-29 · updated 2026-09-30
• Weakness: CWE-73

Description

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.

Affected products

• MyPresta Google Merchant Center Feed: from 1.9.1 through 2.3.8

References

• https://cert.pl/en/posts/2026/09/CVE-2026-85520
• https://mypresta.eu/news/google-merchant-center-security-fix-2026.html

Get alerted when CVE-2026-85520 or the next vulnerability affects your stack