CVE-2026-14553Public exploitNetwork attack vector

Authenticated code execution via MIME-trusted PHP upload

Published Aug 5, 2026 · Updated Aug 5, 2026

Arbitrary file upload in ZPortals before 6.3.4 allows remote authenticated users to execute PHP through a WordPress AJAX action. The uploadProductImage action trusts the client-supplied MIME type, retains the .php extension, and writes the file beneath a web-served uploads path. A Subscriber-level WordPress account is sufficient, and requesting the uploaded file executes it with the web server's privileges.

CVSS severity8.1
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in ZPortals before 6.3.4 allows remote authenticated users to execute PHP through a WordPress AJAX action. The uploadProductImage action trusts the client-supplied MIME type, retains the .php extension, and writes the file beneath a web-served uploads path. A Subscriber-level WordPress account is sufficient, and requesting the uploaded file executes it with the web server's privileges.

The record

CVE
CVE-2026-14553
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Z Portal, LLC
Product
ZPortals
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=0 <6.3.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Z Portal, LLC · ZPortalsversion=0 <6.3.4

Published CVSS scores

8.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

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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