# CVE-2026-42730: Stylemix MasterStudy LMS SQL injection

Source: https://junglewise.ai/threats/cve-2026-42730-stylemix-masterstudy-lms-sql-injection  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-27. Updated: 2026-05-27  
License: CC BY 4.0 with a link back

CVE-2026-42730 · Severity: high · CVSS 8.5 · Published 2026-05-27

Stylemix MasterStudy LMS, a popular learning management system for WordPress, contains a security flaw that could allow users with basic account access to interfere with the site's database. An attacker could use this to steal sensitive information, modify site content, or gain unauthorized access to administrative data. This vulnerability is particularly dangerous as it can be targeted in automated mass-exploitation campaigns.

Technologies: [StylemixThemes MasterStudy LMS](https://junglewise.ai/threats/technologies/masterstudy-lms). Vendors: [StylemixThemes](https://junglewise.ai/threats/vendors/stylemixthemes).

## Quick answers

**Is CVE-2026-42730 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-42730 being exploited in the wild.

**How severe is CVE-2026-42730?** High severity, with a CVSS score of 8.5, published 27 May 2026.

**Which products and versions are affected?** StylemixThemes MasterStudy LMS <= 3.7.29.

**Is there a fix for CVE-2026-42730?** A patch was published on 2026-05-24: Patch released in version 3.7.30 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-42730 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-42730?** Check whether you run StylemixThemes MasterStudy LMS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A blind SQL injection vulnerability exists in the Stylemix MasterStudy LMS plugin for WordPress due to improper neutralization of special elements used in SQL commands. The flaw is present in versions up to and including 3.7.29. An attacker with 'Subscriber' level privileges can exploit this vulnerability via network requests to interact directly with the underlying database. This could lead to the extraction of sensitive data (such as user credentials or configuration details) or the modification of database records. The issue has been addressed in version 3.7.30.

## Affected products

- StylemixThemes MasterStudy LMS <= 3.7.29

## Timeline

- 2026-04-24: other: Reported by researcher walow
- 2026-05-24: advisory: Initial disclosure by Patchstack
- 2026-05-27: disclosed: CVE published to NVD
- 2026-05-24: patched: Patch released in version 3.7.30

## References

- [https://patchstack.com/database/Wordpress/Plugin/masterstudy-lms-learning-management-system/vulnerability/wordpress-masterstudy-lms-plugin-3-7-29-sql-injection-vulnerability?_s_id=cve](https://patchstack.com/database/Wordpress/Plugin/masterstudy-lms-learning-management-system/vulnerability/wordpress-masterstudy-lms-plugin-3-7-29-sql-injection-vulnerability?_s_id=cve)

## Related threats

- [StylemixThemes MasterStudy LMS content injection via XSS](https://junglewise.ai/threats/cve-2026-119478-improper-neutralization-of-script-related-html-tags-in-a-web)
- [MasterStudy LMS PHP object injection in subscriber handling](https://junglewise.ai/threats/cve-2026-118090-subscriber-php-object-injection-in-masterstudy-lms-3-7-55)
- [MasterStudy LMS path traversal in file import](https://junglewise.ai/threats/cve-2026-80067-masterstudy-lms-plugin-for-wordpress-before-3-7-50-contains-a)
- [StylemixThemes MasterStudy LMS broken access control](https://junglewise.ai/threats/cve-2026-118092-missing-authorization-vulnerability-in-stylemixthemes)
- [MasterStudy LMS unauthenticated arbitrary file deletion](https://junglewise.ai/threats/cve-2026-78284-masterstudy-lms-unauthenticated-arbitrary-file-deletion)