CVE-2026-18412 — The OpenCart v4.2.0.0 extension installer contains a directory traversal vulnerability
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 val…
Published: 2026-08-10 · CVSS: 9.1 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7