Cross-Site Scripting Vulnerability in MaxSite CMS Ushki Plugin
CVE-2026-7016

4.8MEDIUM

Key Information:

Vendor

Maxsite

Status
Cms
Vendor
CVE Published:
26 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7016?

A cross-site scripting vulnerability has been identified in the ushki Plugin of MaxSite CMS, affecting versions up to 109.3. This vulnerability allows an attacker to exploit a function within the component, leading to possible remote execution through improper handling of the argument f_ushka_new/f_ushk. Users are encouraged to update to version 109.4, which includes a critical patch addressing this issue. The vendor has acknowledged the flaw and implemented a fix that improves input filtering to comply with secure coding standards.

Affected Version(s)

CMS 109.0

CMS 109.1

CMS 109.2

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-2026-7016 - Proof of Concept

References

https://vuldb.com/vuln/359596
vdb-entrytechnical-description
https://vuldb.com/vuln/359596/cti
signaturepermissions-required
https://vuldb.com/submit/796741
third-party-advisory

CVSS V4

Score:
4.8
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

konchan (VulDB User)
VulDB CNA Team
.