CVE-2026-18412Network attack vector

Administrator-triggered code execution via unchecked archive paths

Published Aug 10, 2026 · Updated Aug 10, 2026

Path traversal in the OpenCart 4.2.0.0 extension installer allows remote authenticated users to write files outside the extraction directory. The installer uses each uploaded .ocmod.zip entry name as a filesystem path without checking that its resolved destination remains under the extraction root. Administrator access and installation of a crafted extension are required; placing a PHP web shell in the webroot grants code execution with the OpenCart process's privileges.

CVSS severity9.1
Critical
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in the OpenCart 4.2.0.0 extension installer allows remote authenticated users to write files outside the extraction directory. The installer uses each uploaded .ocmod.zip entry name as a filesystem path without checking that its resolved destination remains under the extraction root. Administrator access and installation of a crafted extension are required; placing a PHP web shell in the webroot grants code execution with the OpenCart process's privileges.

The record

CVE
CVE-2026-18412
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
OpenCart
Product
OpenCart
Classifications
CWE-22, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.2.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

OpenCart · OpenCartversion=4.2.0.0

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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