Persistent Cross-Site Scripting Vulnerability in PHP Melody 3.0
CVE-2021-47914

5.1MEDIUM

Key Information:

Vendor

PHPsugar

Status
PHP Melody
Vendor
CVE Published:
1 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47914?

PHP Melody version 3.0 is affected by a persistent cross-site scripting vulnerability located in the 'edit-video.php' submitted parameter. This security flaw enables remote attackers to inject malicious JavaScript code. If exploited, this vulnerability could facilitate unauthorized access to user sessions, persistent phishing attacks, and manipulation of various application modules, posing significant risks to both users and the integrity of the application.

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Affected Version(s)

PHP Melody 3.0

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-2021-47914 - Proof of Concept

References

https://www.vulnerability-lab.com/get_content.php?id=2292
exploit
https://www.phpsugar.com/blog/2021/09/php-melody-3-0-vuln...
patch
https://www.phpsugar.com/phpmelody.html
product

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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