VDB-343648 · CVE-2021-47913 · EUVD-2021-34758

PHPSUGAR PHP Melody 3.0 WYSIWYG Editor cross site scripting

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability was found in PHPSUGAR PHP Melody 3.0 and classified as problematic. This affects an unknown function of the component WYSIWYG Editor. Executing a manipulation can lead to cross site scripting. This vulnerability appears as CVE-2021-47913. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability classified as problematic was found in PHPSUGAR PHP Melody 3.0. This vulnerability affects an unknown code of the component WYSIWYG Editor. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

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.

The weakness was presented with Vulnerability-Lab. The advisory is shared for download at vulnerability-lab.com. This vulnerability was named CVE-2021-47913 since 02/01/2026. The exploitation appears to be easy. The attack can be initiated remotely. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2021-34758). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Programming Language Software

Vendor

PHPSUGAR

Name

PHP Melody

Version

License

open-source

CPE 2.3info

🔒

CPE 2.2info

🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔒

CNA Base Score: 6.4
CNA Vector (VulnCheck): 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/01/2026 Advisory disclosed
02/01/2026 +0 days CVE reserved
02/01/2026 +0 days VulDB entry created
02/12/2026 +11 days VulDB entry last update

Sourcesinfo

Advisory: vulnerability-lab.com
Organization: Vulnerability-Lab
Status: Not defined

CVE: CVE-2021-47913 (🔒)
GCVE (CVE): GCVE-0-2021-47913
GCVE (VulDB): GCVE-100-343648
EUVD: 🔒

Entryinfo

Created: 02/01/2026 16:35
Updated: 02/12/2026 02:12
Changes: 02/01/2026 16:35 (76), 02/02/2026 01:52 (1), 02/12/2026 02:12 (11)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.