---
id: CVE-2026-88419
title: >-
  An unrestricted upload of files with a dangerous type in the thumbnail-upload
  endpoint (/index.php?m=member&f=article&v=thumbUpload) of WuzhiCMS 5.0.0
  allows an authenticated low-privileged member to upload a crafted .php file
  and execut…
summary: >-
  An unrestricted upload of files with a dangerous type in the thumbnail-upload
  endpoint (/index.php?m=member&f=article&v=thumbUpload) of WuzhiCMS 5.0.0
  allows an authenticated low-privileged member to upload a crafted .php file
  and execut…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-434
published: '2026-09-22'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:25:27.050'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88419'
references:
  - url: 'https://github.com/15536818056/CVE/issues/6'
    label: cve@mitre.org
  - url: 'https://github.com/15536818056/CVE/issues/6'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00479
epssPercentile: 0.38765
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-22T19:42:45.756191Z'
ingestedAt: '2026-09-22T20:10:15.097Z'
---

## Overview

An unrestricted upload of files with a dangerous type in the thumbnail-upload endpoint (/index.php?m=member&f=article&v=thumbUpload) of WuzhiCMS 5.0.0 allows an authenticated low-privileged member to upload a crafted .php file and execute arbitrary PHP code on the server, because the stored file extension is taken verbatim from the client-supplied filename with no extension allowlist or content validation and the file is written to the web-accessible uploadfile/ directory, from which the web server executes PHP.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.