---
id: CVE-2026-80050
title: >-
  ContiNew Admin fails to apply file-upload permission checks or file-type
  allowlist validation to multipart upload endpoints, allowing authenticated
  users to store files with arbitrary extensions
summary: >-
  ContiNew Admin fails to apply file-upload permission checks or file-type
  allowlist validation to multipart upload endpoints, allowing authenticated
  users to store files with arbitrary extensions. Attackers can initialize
  chunked uploads,…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-434
published: '2026-08-25'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T20:43:32.537'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80050'
references:
  - url: 'https://github.com/continew-org/continew-admin'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/continew-org/continew-admin/blob/v4.1.0/continew-system/src/main/java/top/continew/admin/system/controller/MultipartUploadController.java
    label: disclosure@vulncheck.com
  - url: 'https://github.com/continew-org/continew-admin/issues/221'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/continew-admin-through-4.1.0-missing-authorization-and-file-type-allowlist-on-multipart-upload-endpoints
    label: disclosure@vulncheck.com
  - url: 'https://github.com/continew-org/continew-admin/issues/221'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00435
epssPercentile: 0.35123
ingestedAt: '2026-09-24T20:51:40.228Z'
---

## Overview

ContiNew Admin fails to apply file-upload permission checks or file-type allowlist validation to multipart upload endpoints, allowing authenticated users to store files with arbitrary extensions. Attackers can initialize chunked uploads, send file parts, and complete uploads to leave arbitrary files in the storage backend accessible via web server URLs.

## Remediation

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