StylemixThemes MasterStudy LMS Pro Plugin up to 4.8.20 on WordPress columns sql injection

Summaryinfo

A vulnerability categorized as critical has been discovered in StylemixThemes MasterStudy LMS Pro Plugin up to 4.8.20 on WordPress. Affected by this vulnerability is an unknown functionality. Executing a manipulation of the argument columns can lead to sql injection. This vulnerability is handled as CVE-2026-8653. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical was found in StylemixThemes MasterStudy LMS Pro Plugin up to 4.8.20 on WordPress. This vulnerability affects an unknown functionality. The manipulation of the argument columns with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The MasterStudy LMS Pro Plus plugin for WordPress is vulnerable to generic SQL Injection via the 'columns' parameter in all versions up to, and including, 4.8.20 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with instructor-level access or above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

The weakness was released by Rafie Muhammad. The advisory is shared for download at wordfence.com. This vulnerability was named CVE-2026-8653 since 05/15/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 06/07/2026). The MITRE ATT&CK project declares the attack technique as T1505.

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 databases at CNNVD (CNNVD-202606-1376) and EUVD (EUVD-2026-34191). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• StylemixThemes

Name

• MasterStudy LMS Pro Plugin

Version

• 4.8.0
• 4.8.1
• 4.8.2
• 4.8.3
• 4.8.4
• 4.8.5
• 4.8.6
• 4.8.7
• 4.8.8
• 4.8.9
• 4.8.10
• 4.8.11
• 4.8.12
• 4.8.13
• 4.8.14
• 4.8.15
• 4.8.16
• 4.8.17
• 4.8.18
• 4.8.19
• 4.8.20

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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