What’s Vulnerable › Vulnerabilities
CVE-2026-81342: MasterStudy LMS < 3.7.43 - Unauthenticated Open Redirect
- Severity: medium (CVSS 4.7 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-29 · updated 2026-08-31
- Weakness: CWE-601
Description
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.43 does not validate a redirect parameter supplied during user registration before using it, allowing unauthenticated attackers to redirect users to arbitrary external URLs.
Affected products
- MasterStudy LMS WordPress Plugin: before 3.7.43 — fixed in 3.7.43
How to fix
Upgrade to a fixed version: MasterStudy LMS WordPress Plugin 3.7.43. Check the vendor advisory for mitigations.
References
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