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CVE-2026-18412

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

Published: Aug 10, 2026Updated: Aug 12, 2026 Sources: CVE List NVD
9.1CRITICAL
NVD MITRE
EPSS Score
0.4%
Top 71.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Affected Products

OpenCart
commercial
OpenCartOn-prem
Web & CMS Plugins / ecommerce-platform

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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References

https://kb.cert.org/vuls/id/614868
kb.cert.org
https://www.kb.cert.org/vuls/id/614868
kb.cert.org
News mentions
1

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