What is the CVSS score of CVE-2021-47914?

CVE-2021-47914 has a CVSS 3.1 base score of 6.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of PHP are affected by CVE-2021-47914?

Organizations using PHP Melody version 3.0 should be aware of moderate risk from CVE-2021-47914, a cross-site scripting vulnerability rated CVSS 6.4.

Is there a public PoC exploit available for CVE-2021-47914?

Yes, a public proof-of-concept exploit is available for CVE-2021-47914. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2021-47914?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

PHP CVE-2021-47914

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-02-01 disclosure@vulncheck.com

PHP XSS Php Melody

6.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.4 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:01 vuln.today

PoC Detected

Feb 11, 2026 - 19:29 vuln.today

Public exploit code

CVE Published

Feb 01, 2026 - 13:15 nvd

MEDIUM 6.4

DescriptionCVE.org

PHP Melody version 3.0 contains a persistent cross-site scripting vulnerability in the edit-video.php submitted parameter that allows remote attackers to inject malicious script code. Attackers can exploit this vulnerability to execute arbitrary JavaScript, potentially leading to session hijacking, persistent phishing, and manipulation of application modules.

AnalysisAI

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects the edit-video.php submitted component of Php Melody. PHP Melody version 3.0 contains a persistent cross-site scripting vulnerability in the edit-video.php submitted parameter that allows remote attackers to inject malicious script code. Attackers can exploit this vulnerability to execute arbitrary JavaScript, potentially leading to session hijacking, persistent phishing, and manipulation of application modules.

RemediationAI

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.

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CVE-2021-47914 vulnerability details – vuln.today

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PHP CVE-2021-47914

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code