Persistent Cross-Site Scripting in Knap Advanced PHP Login by Knap
CVE-2022-50940

5.1MEDIUM

Key Information:

Vendor

Ajay138

Status
Knap Advanced PHP Login
Vendor
CVE Published:
1 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2022-50940?

Knap Advanced PHP Login version 3.1.3 is susceptible to a persistent cross-site scripting (XSS) vulnerability, allowing attackers to inject harmful scripts via the name parameter. Exploitation of this flaw can result in executing arbitrary scripts within the user interface and activity log backend modules. This may lead to unauthorized session hijacking, enabling attackers to conduct persistent phishing attacks and compromise user data.

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Affected Version(s)

Knap Advanced PHP Login 3.1.3

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-2022-50940 - Proof of Concept

References

https://www.vulnerability-lab.com/get_content.php?id=2307
exploit
https://laravel-vuejs.com/
product
https://www.vulncheck.com/advisories/knap-advanced-php-lo...
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

Vulnerability-Lab [Research Team]
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