Persistent Cross-Site Scripting Vulnerability in Schlix CMS
CVE-2021-47834

5.1MEDIUM

Key Information:

Vendor

Schlix

Status
Schlix Cms
Vendor
CVE Published:
16 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47834?

Schlix CMS version 2.2.6-6 has a persistent cross-site scripting vulnerability that permits authenticated users to inject malicious scripts into category titles. This flaw allows attackers to create contact categories containing script payloads, which are subsequently executed when any user views the affected page. As a result, there is a clear risk of session hijacking, phishing attacks, and unauthorized content manipulation, highlighting the importance of maintaining secure coding practices and addressing user inputs in web applications.

Affected Version(s)

Schlix CMS 2.2.6-6

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-2021-47834 - Proof of Concept

References

https://www.exploit-db.com/exploits/49837
exploit
https://www.schlix.com/
product
https://www.vulncheck.com/advisories/schlix-cms-title-per...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
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

Emircan Baş
.