CVE-2026-88396Network attack vectorHinoki check available

Authenticated code execution via unrestricted PHP upload

Published Oct 5, 2026 · Updated Oct 5, 2026

Unrestricted file upload in Zhao-github ApiAdmin 5.0 and earlier allows remote authenticated users to execute PHP code through the admin upload endpoint. The POST /admin/Index/upload handler retains the uploaded file's extension without type checks and places the file in the web-accessible public/upload/Ymd/ directory. An administrator account and a server configured to execute uploaded PHP files are required for server-side code execution.

CVSS severityUnavailable
Unscored
EPSS probability1.03%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Unrestricted file upload in Zhao-github ApiAdmin 5.0 and earlier allows remote authenticated users to execute PHP code through the admin upload endpoint. The POST /admin/Index/upload handler retains the uploaded file's extension without type checks and places the file in the web-accessible public/upload/Ymd/ directory. An administrator account and a server configured to execute uploaded PHP files are required for server-side code execution.

The record

CVE
CVE-2026-88396
Published
Oct 5, 2026
Updated
Oct 5, 2026
Vendor
Zhao-github
Product
ApiAdmin
Classifications
T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 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?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Zhao-github · ApiAdminversion=n/a

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

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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