by Kastro
Paper/Archive/CVE-2026-18412

CVE-2026-18412

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

EPSS 0.5%CVSS 9.1
critical.is priorityof 100
36
CVSS 9.1 (ADP)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 45.3.453 × 209.1No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
OpenCart4.2.0.0–CNA

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refkb.cert.org/vuls/id/614868refkb.cert.org/vuls/id/614868