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Vulnerabilitas in MyPresta Google Merchant Center Feed software

Vulnerabilitas 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)

Externum imperium nominis vel viae (CWE-73)

Report source

Report to CERT Polska

Description

CERT Polska nuntium de vulnerabilitate in MyPresta Google Merchant Center Feed software accepit et in coordinatione eius revelationis participavit.

Vulnerabilitas CVE-2026-85520: Google Merchant Center Feed (gmfeed) modulorum pro PrestaShop vulnerabilis est ad non authentificatum arbitrium scribendi fasciculorum in puncto feed.php. Impugnator non authentificatus potest mittere petitionem artificiosam quae imperium habet super nomen fasciculi output, viam, extensionem, et contentum per parametra petitionis. Propter defectum authenticationis et validationis input, petitio cum successu processatur, permittens impugnatori scribere et exsequi arbitrium PHP codicem, quod ducit ad exsecutionem codicis remoti (RCE).

Haec quaestio in versione 2.3.9 emendata est.

Credits

Gratias agimus Today Group sp. z o.o. pro responsabili nuntio de vulnerabilitate.

Plura de processu revelationis vulnerabilitatis coordinatae apud CERT Polska inveniuntur ad https://cert.pl/en/cvd/.

Vulnerabilitates Relatae

CVE-2026-85520 CVSS 9.3 CRITICAL Deferred
CVE-2026-85520 - Unauthenticated arbitrary file write leading to RCE in gmfeed PrestaShop module
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.