9.1
CriticalCVSS 3.1 · from CISA
CVE-2026-18412
The OpenCart v4.2.0.0 extension installer contains a directory traversal vulnerability
OpenCartAffectedOpenCart
FixNo fix listed yet.
PublishedAug 10, 14:50 · certcc
Scored9.1 · CISA
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:11 UTC
What we know
No known exploitation. CISA KEV, checked 22:11 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker only needs network access to the target. No login needed. CVSS: network, no privileges.
A successful attack can read data and change data. CVSS impact.
A successful attack gives full control of the affected system. CISA: technical impact total.
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.
From certcc
Affected and fixed versions
ProductAffectedFixed inOpenCart4.2.0.0–
Exploit code
Exploit-DBnone knownMetasploitnone knownNucleinone known