What is CVE-2026-81342?

CVE-2026-81342 is a medium-severity vulnerability in Masterstudy Lms WordPress Plugin, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.7/10. Published 2026-08-29.

How severe is CVE-2026-81342?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Open Redirect in Masterstudy Lms WordPress Plugin

CVE-2026-81342

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.

Vulnerability class: Open Redirect

EPSS: 0.001 (3.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N.

Affected products

Unknown Masterstudy Lms Wordpress Plugin

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-81342?: CVE-2026-81342 is a medium-severity vulnerability in Masterstudy Lms WordPress Plugin, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.7/10. Published 2026-08-29.
How severe is CVE-2026-81342?: Medium severity. CVSS v3 base score is 4.7 out of 10.