Medium severity · published Jun 26, 2026
CVE-2026-57640
WordPress MasterStudy LMS plugin <= 3.7.30 - Broken Access Control vulnerability
4.3
CVSS
0.3%
EPSS
No
On KEV
Description
Subscriber Broken Access Control in MasterStudy LMS <= 3.7.30 versions.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ML
MasterStudy LMS · Stylemix
through 3.7.30 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-57640
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-57640
patchstack.com
https://patchstack.com/database/wordpress/plugin/masterstudy-lms-learning-management-system/vulnerability/wordpress-masterstudy-lms-plugin-3-7-30-broken-access-control-vulnerability?_s_id=cve
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