CVE-2021-47915
Unknown Unknown - Not Provided
Remote SQL Injection in PHP Melody 3.0 Video Edit Module

Publication date: 2026-02-01

Last updated on: 2026-02-11

Assigner: VulnCheck

Description
PHP Melody version 3.0 contains a remote SQL injection vulnerability in the video edit module that allows authenticated attackers to inject malicious SQL commands. Attackers can exploit the unvalidated 'vid' parameter to execute arbitrary database queries and potentially compromise the web application and database management system.
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Meta Information
Published
2026-02-01
Last Modified
2026-02-11
Generated
2026-06-16
AI Q&A
2026-02-01
EPSS Evaluated
2026-06-15
NVD
CVE-2021-47915
EUVD
EUVD-2021-34756
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
phpsugar php_melody 3.0
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.
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Compliance Impact

The provided resources do not specify how the CVE-2021-47915 vulnerability affects compliance with common standards and regulations such as GDPR or HIPAA.

Executive Summary

CVE-2021-47915 is a remote SQL injection vulnerability in PHP Melody version 3.0, specifically in the video edit module. It occurs because the 'vid' parameter is not properly validated, allowing authenticated attackers with moderator or admin privileges to inject malicious SQL commands. This enables them to execute arbitrary database queries, potentially compromising the web application and the underlying database management system. [1, 2]

Impact Analysis

Exploitation of this vulnerability can lead to significant compromise of the web application and the database management system. Attackers can execute arbitrary SQL queries, which may result in unauthorized data access, data manipulation, or extraction of sensitive information. This can compromise the confidentiality and integrity of the system, potentially leading to full control over the database and web server. [1, 2]

Detection Guidance

Detection can be performed by testing the 'vid' parameter in the edit-video.php file for SQL injection vulnerabilities. Two proof-of-concept techniques include: 1) Using a UNION-based SQL injection payload to extract data, and 2) Using a time-based blind SQL injection payload with the SLEEP function to confirm the vulnerability. For example, sending crafted GET requests with SQL injection payloads in the 'vid' parameter to the admin control panel interface can help detect the issue. Specific commands would involve curl or similar tools to send these requests, such as: curl "http://target/edit-video.php?vid=1' UNION SELECT ... -- " or curl "http://target/edit-video.php?vid=1' AND SLEEP(5)-- ". These tests require authenticated access with moderator or admin privileges. [2]

Mitigation Strategies

Immediate mitigation steps include: 1) Applying the vendor's patch released on September 22, 2021. 2) Using prepared statements for all database queries involving the 'vid' parameter. 3) Restricting input parameters to disallow special characters that could be used in SQL injection. 4) Properly escaping and encoding all inputs to prevent execution of malicious payloads. 5) Optionally, integrating a web application firewall or filtering mechanisms to block SQL injection attacks. [2]

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