---
id: CVE-2026-86244
title: >-
  A security vulnerability has been detected in FastAdmin up to
  1.2.0.20210401_beta
summary: >-
  A security vulnerability has been detected in FastAdmin up to
  1.2.0.20210401_beta. Affected is the function register/login of the file
  application/index/controller/User.php of the component User Controller. Such
  manipulation of the argum…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'
cwe:
  - CWE-79
  - CWE-94
product: FastAdmin
affected:
  - FastAdmin 1.2.0.20210401_beta
published: '2026-09-07'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T18:21:16.913'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86244'
references:
  - url: >-
      https://github.com/fastadminnet/fastadmin/commit/b3d32e2bf3637488cfe2fc58a27a9d2475b2b51b
    label: cna@vuldb.com
  - url: 'https://lhzzz08.github.io/posts/cveapplication4/'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-86244'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/898809'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/399399'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/399399/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-08T17:36:19.107706Z'
epss: 0.0047
epssPercentile: 0.38079
ingestedAt: '2026-09-07T12:10:16.647Z'
---

## Overview

A security vulnerability has been detected in FastAdmin up to 1.2.0.20210401_beta. Affected is the function register/login of the file application/index/controller/User.php of the component User Controller. Such manipulation of the argument url leads to cross site scripting. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. Upgrading to version 1.2.1.20210731_beta is able to address this issue. The name of the patch is b3d32e2bf3637488cfe2fc58a27a9d2475b2b51b. It is recommended to upgrade the affected component.

## Remediation

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