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CVE-2026-86241— liufee FeehiCMS Cookie Validation main-local.php hard-coded key

Quick assessment

Affected

liufee FeehiCMS

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Liufee FeehiCMS是Liufee个人开发者的一个内容管理系统。 Liufee FeehiCMS 2.1.1及之前版本存在加密问题漏洞，该漏洞源于Cookie Validation组件对environments/prod/backend/config/main-local.php文件中cookieValidationKey参数的操作，导致使用硬编码的加密密钥，可能被远程利用。

CVSS 4.3 · Medium EPSS 0.49% · P42 Updated Sep 12, 2026

Possible ATT&CK Techniques 1 AI

T1527.001

Affected Version Matrix 2

Vendor	Product	Version Range	Status
liufee	FeehiCMS	`2.1.0`	affected
		`2.1.1`	affected

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I. Basic Information for CVE-2026-86241

Vulnerability Information

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Vulnerability Title

liufee FeehiCMS Cookie Validation main-local.php hard-coded key

Source: CVE Program / CVE List V5

Vulnerability Description

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.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

使用硬编码的密码学密钥

Source: CVE Program / CVE List V5

Vulnerability Title

Liufee FeehiCMS 加密问题漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
liufee	FeehiCMS	2.1.0	`cpe:2.3:a:liufee:feehicms::::::::`

II. Public POCs for CVE-2026-86241

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-86241

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Vendor Advisories for CVE-2026-86241 (1)

🔗 VulDB | Security Check vdb-entry technical-description

Security Blog Posts for CVE-2026-86241 (1)

🔗 cve/FEHI-003-Empty-cookieValidationKey.md at main · yang5ynag/cve · GitHub Read full article exploit

Other References for CVE-2026-86241 (3)

🔗 FeehiCMS Empty cookieValidationKey in Production Environment · Issue #96 · liufee/cms issue-tracking
🔗 CVE-2026-86241 in FeehiCMS third-party-advisory
🔗 Submit #901836: liufee feehi cms 2.1.1 配置错误 Read full article third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-86241

Same Patch Batch · liufee · 2026-09-07 · 3 CVEs total

CVE-2026-86239	5.3 MEDIUM	liufee FeehiCMS UEditor Widget UeditorAction.php init unrestricted upload
CVE-2026-86240	4.7 MEDIUM	liufee FeehiCMS UEditor Uploader.php catchImage server-side request forgery

IV. Related Vulnerabilities

Same product: FeehiCMS

Same vendor: liufee

Same weakness: CWE-321