---
id: CVE-2026-91849
title: A security flaw has been discovered in WuzhiCMS up to 4.1.0
summary: >-
  A security flaw has been discovered in WuzhiCMS up to 4.1.0. This affects the
  function member::setAvatar of the file /index.php?m=member&f=user&v=setAvatar
  of the component Avatar Upload. The manipulation of the argument File results
  in …
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-284
  - CWE-434
product: WuzhiCMS
affected:
  - WuzhiCMS 4.0
  - WuzhiCMS 4.1.0
published: '2026-09-15'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T16:18:29.010'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-91849'
references:
  - url: 'https://github.com/wuzhicms/wuzhicms/'
    label: cna@vuldb.com
  - url: 'https://github.com/wuzhicms/wuzhicms/issues/219'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-91849'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/933702'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/404077'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/404077/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-17T15:18:24.837096Z'
epss: 0.00366
epssPercentile: 0.27661
ingestedAt: '2026-09-15T15:39:12.904Z'
---

## Overview

A security flaw has been discovered in WuzhiCMS up to 4.1.0. This affects the function member::setAvatar of the file /index.php?m=member&f=user&v=setAvatar of the component Avatar Upload. The manipulation of the argument File results in unrestricted upload. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

## Remediation

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