CVE-2026-6650Network attack vector

Authenticated arbitrary file upload via package extraction

Published Apr 20, 2026 · Updated Apr 20, 2026

Unrestricted upload in Z-BlogPHP 1.7.5 allows remote authenticated users to write dangerous files through an application package. App::UnPack in zb_users/plugin/AppCentre/app_upload.php extracts package contents without restricting dangerous file types. Administrator privileges are required, and the project states that administrator-controlled PHP uploads through plugin management are intended behavior rather than a vulnerability.

CVSS severity4.7
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted upload in Z-BlogPHP 1.7.5 allows remote authenticated users to write dangerous files through an application package. App::UnPack in zb_users/plugin/AppCentre/app_upload.php extracts package contents without restricting dangerous file types. Administrator privileges are required, and the project states that administrator-controlled PHP uploads through plugin management are intended behavior rather than a vulnerability.

The record

CVE
CVE-2026-6650
Published
Apr 20, 2026
Updated
Apr 20, 2026
Vendor
Z-Blog
Product
Z-BlogPHP
Classifications
CWE-434, CWE-284
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 20, 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=1.7.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Z-Blog · Z-BlogPHPversion=1.7.5

Published CVSS scores

4.7VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
2.0VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.8VulDBAV:N/AC:L/Au:M/C:P/I:P/A:P

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CWE-284Improper Access Control

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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