---
id: CVE-2026-86241
title: A weakness has been identified in liufee FeehiCMS up to 2.1.1
summary: >-
  A weakness has been identified in liufee FeehiCMS up to 2.1.1. This impacts an
  unknown function of the file environments/prod/backend/config/main-local.php
  of the component Cookie Validation. This manipulation of the argument
  cookieValid…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'
cwe:
  - CWE-320
  - CWE-321
vendor: liufee
product: FeehiCMS
affected:
  - FeehiCMS 2.1.0
  - FeehiCMS 2.1.1
published: '2026-09-07'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T21:17:39.983'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86241'
references:
  - url: 'https://github.com/liufee/cms/issues/96'
    label: cna@vuldb.com
  - url: >-
      https://github.com/yang5ynag/cve/blob/main/FEHI-003-Empty-cookieValidationKey.md
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-86241'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/901836'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/399398'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/399398/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-11T20:03:09.486366Z'
epss: 0.0049
epssPercentile: 0.39555
ingestedAt: '2026-09-07T12:10:16.601Z'
---

## Overview

A weakness has been identified in liufee FeehiCMS up to 2.1.1. This impacts an unknown function of the file environments/prod/backend/config/main-local.php of the component Cookie Validation. This manipulation of the argument cookieValidationKey causes use of hard-coded cryptographic key
 . The attack is possible to be carried out remotely. The exploit has been made available to the public and could 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.