CVE-2026-81342

MasterStudy LMS < 3.7.43 - Unauthenticated Open Redirect

MEDIUM

4.7

CVSS Score

Published: August 29, 2026 at 06:00 AM UTC

Updated: August 31, 2026 at 08:26 PM UTC

1 product affected across 1 vendorMasterStudy LMS

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Severity

MEDIUM4.7

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

MasterStudy LMS · Stylemixthemeswordpress-plugin

60%

v < 3.7.43

Affected range stops below 3.7.43, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitVDB EntryTechnical Description

Source: cverecord

https://wpscan.com/vulnerability/f6f89b50-3087-4fb6-ba12-93fdc1bcc9ed/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.7MEDIUMCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: CHANGED
Confidentiality: LOW
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-601

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