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Medium severity · published Jun 4, 2026
CVE-2026-8653
MasterStudy LMS Pro Plus <= 4.8.20 - Authenticated (Instructor+) SQL Injection via 'columns' Parameter
6.5
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ML
MasterStudy LMS Pro · StylemixThemes
through 4.8.20 · source: vendor
Affected product
ML
MasterStudy LMS Pro
StylemixThemes
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-8653
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-8653
stylemixthemes.com
https://stylemixthemes.com/wordpress-lms-plugin/
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/f24749a8-e01d-436a-9ec8-3745a6b5eecf?source=cve
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