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CVE PROGRAM SOURCE RECORD9.1 Critical

CVE-2026-18412

The OpenCart v4.2.0.0 extension installer contains a directory traversal vulnerability

Description

OpenCart extensions are uploaded as zip files with .ocmod.zip extensions. Upon installation, the OpenCart v4.2.0.0 extension installer extracts these zip files, but does not validate that the extracted paths stay inside the intended extraction directory. An attacker can craft a malicious extension containing file path traversal sequences, such as ../. With this vulnerability, an attacker can write files, such as a PHP web shell, into the webroot directory.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

OpenCart OpenCart

  • 4.2.0.0affected

References