Cross Site Scripting Vulnerability in Intelliants Subrion CMS
CVE-2026-12202

4.8MEDIUM

Key Information:

Vendor

Intelliants

Status
Subrion Cms
Vendor
CVE Published:
15 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-12202?

A significant vulnerability has been discovered in Intelliants Subrion CMS versions up to 4.0.3, specifically within the Blocks Endpoint component. This security flaw enables attackers to manipulate the CSS class name argument, leading to potential cross-site scripting occurrences. Such exploits can be conducted remotely, posing a risk to users who interact with the affected component. Despite early notification of the vulnerability, the vendor did not provide any response. This could leave users and systems exposed to malicious attacks leveraging this XSS vulnerability.

Affected Version(s)

Subrion CMS 4.0.0

Subrion CMS 4.0.1

Subrion CMS 4.0.2

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-2026-12202 - Proof of Concept

References

https://vuldb.com/vuln/370845
vdb-entrytechnical-description
https://vuldb.com/vuln/370845/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-12202
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

Karina Gante
karinagante (VulDB User)
VulDB CNA Team
.