TI-2026-58678 Aliases CVE-2026-85520 GHSA-mxmh-vx83-qfxg

Unauthenticated arbitrary file write leading to RCE in gmfeed PrestaShop module

MEDIUM 50CWE-73Published 2026-09-29 · Updated 2026-09-29

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00991 62nd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
MyPresta	Google Merchant Center Feed	1.9.1 – 2.3.8	—	No fix listed	CNA

Google Merchant Center Feed VendorMyPresta Affected 1.9.1 – 2.3.8 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-85520
2026-10-03 Alias added: GHSA-mxmh-vx83-qfxg

References

Advisory 1

https://cert.pl/en/posts/2026/09/CVE-2026-85520

Other 1

https://mypresta.eu/news/google-merchant-center-security-fix-2026.html

TI-2023-24341 In the module extratabspro before version 2.2.8 from MyPresta.eu for PrestaShop, a guest… CVSS 3.1CRITICAL 9.8
TI-2023-24949 In the module "Product Tag Icons Pro" (ticons) before 1.8.4 from MyPresta.eu for… CVSS 3.1CRITICAL 9.8
TI-2023-24947 In the module mib < 1.6.1 from MyPresta.eu for PrestaShop, a guest can perform SQL… CVSS 3.1CRITICAL 9.8
TI-2018-13715 modules/orderfiles/ajax/upload.php in the Customer Files Upload addon 2018-08-01 for… CVSS 3.1CRITICAL 9.8
TI-2021-17745 The Customer Photo Gallery addon before 2.9.4 for PrestaShop is vulnerable to SQL injection. CVSS 3.1CRITICAL 9.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences