CVE-2021-47913

Name: CVE-2021-47913
Creator: NVD / NIST
Published: 2026-02-01T13:15:55.413+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.1/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2021-47913 is a medium-severity vulnerability rated 5.1/10 on the CVSS scale. PHP Melody 3.0 contains a persistent cross-site scripting vulnerability in the video editor that allows privileged users to inject malicious scripts. Attackers can exploit the WYSIWYG editor to execute persistent scripts, potentially leading to session hijacking and application manipulation.. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

PHP Melody 3.0 contains a persistent cross-site scripting vulnerability in the video editor that allows privileged users to inject malicious scripts. Attackers can exploit the WYSIWYG editor to execute persistent scripts, potentially leading to session hijacking and application manipulation.

Metrics

CVSS 3.1

5.4/10

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

CVSS 4.0

5.1/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.22%

12.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Phpsugar	Php Melody	3.0

References

https://www.phpsugar.com/blog/2021/09/php-melody-3-0-vulnerability-report-fix/Vendor Advisory
https://www.phpsugar.com/phpmelody.htmlProduct
https://www.vulncheck.com/advisories/php-melody-persistent-cross-site-scripting-via-video-editorThird Party Advisory
https://www.vulnerability-lab.com/get_content.php?id=2291Exploit, Third Party Advisory
https://www.vulnerability-lab.com/get_content.php?id=2291Exploit, Third Party Advisory

Timeline

Published: Feb 1, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2021-47913?

How severe is CVE-2021-47913?

CVE-2021-47913 has a CVSS score of 5.1/10 (MEDIUM severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2021-47913?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-47913?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST