Cross Site Scripting Vulnerability in Feelcrm-os by FeelEC
CVE-2026-105291

5.3MEDIUM

Key Information:

Vendor

Feelec-yishu

Status
Feelcrm-os
Vendor
CVE Published:
5 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-105291?

A security flaw has been detected in the feelcrm-os 1.0.0 product from FeelEC, specifically within the GroupController::index function in 'App/Feelcrm/Index/Controller/GroupController.class.php'. This issue arises from improper handling of the 'keyword' argument, allowing for remote cross site scripting (XSS) attacks. The vulnerability can be exploited without prior authentication, leading to significant risks for users. Despite the identification and reporting of this vulnerability, the development team has yet to provide a formal response or remediation.

Affected Version(s)

feelcrm-os 1.0.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-105291 - Proof of Concept

References

https://vuldb.com/vuln/413472
vdb-entrytechnical-description
https://vuldb.com/vuln/413472/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-105291
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

liaoxijun10086 (VulDB User)
VulDB CNA Team
.