Persistent Cross-Site Scripting in PHP Melody Video Editor by PHP Melody
CVE-2021-47913

5.1MEDIUM

Key Information:

Vendor

PHPsugar

Status
PHP Melody
Vendor
CVE Published:
1 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47913?

PHP Melody 3.0 is vulnerable to a persistent cross-site scripting attack through its video editor feature. Privileged users can exploit the WYSIWYG editor to inject malicious scripts, which may lead to session hijacking and manipulation of application content. Securing this application against such vulnerabilities is essential to maintain user trust and protect sensitive data.

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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-2021-47913 - Proof of Concept

References

https://www.vulnerability-lab.com/get_content.php?id=2291
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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