Cross Site Scripting Vulnerability in Yifang CMS by Yifang
CVE-2026-6633

5.1MEDIUM

Key Information:

Vendor

Yifang

Status
Cms
Vendor
CVE Published:
20 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6633?

A security issue has been identified in Yifang CMS versions up to 2.0.5, specifically within the Extended Management Module. This vulnerability resides in the 'store' function found in 'plugins/yifang_backend_account/logic/admin/L_rbac_admin.php'. Attackers can exploit this flaw to execute cross-site scripting attacks remotely by manipulating the 'Account' argument. The exploit has been made public, amplifying the threat as it can be used for malicious attacks. The vendor was notified about this vulnerability but did not provide any response.

Affected Version(s)

CMS 2.0.0

CMS 2.0.1

CMS 2.0.2

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-2026-6633 - Proof of Concept

References

https://vuldb.com/vuln/358267
vdb-entrytechnical-description
https://vuldb.com/vuln/358267/cti
signaturepermissions-required
https://vuldb.com/submit/793352
third-party-advisory

CVSS V4

Score:
5.1
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

shiyifei (VulDB User)
VulDB CNA Team
.