---
id: CVE-2021-27990
title: >-
  Appspace 6.2.4 is vulnerable to a broken authentication mechanism where pages
  such as /medianet/mail.aspx can be called directly and the framework is
  exposed with layouts, menus and functionalities.
summary: >-
  Appspace 6.2.4 is vulnerable to a broken authentication mechanism where pages
  such as /medianet/mail.aspx can be called directly and the framework is
  exposed with layouts, menus and functionalities.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-287
vendor: appspace
product: appspace
affected:
  - appspace = 6.2.4
published: '2021-04-14'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-27990'
references:
  - url: 'https://github.com/syedsohaibkarim/PoC-BrokenAuth-AppSpace6.2.4'
    label: cve@mitre.org
  - url: 'http://appspace.com'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://github.com/syedsohaibkarim/PoC-BrokenAuth-AppSpace6.2.4'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.01436
epssPercentile: 0.72009
ingestedAt: '2026-07-05T00:59:25.848Z'
---

## Overview

Appspace 6.2.4 is vulnerable to a broken authentication mechanism where pages such as /medianet/mail.aspx can be called directly and the framework is exposed with layouts, menus and functionalities.

## Affected

- `appspace = 6.2.4`

## Remediation

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