MasterStudy LMS Plugin up to 3.7.42 on WordPress User Registration redirect

Summaryinfo

A vulnerability classified as problematic has been found in MasterStudy LMS Plugin up to 3.7.42. Affected is an unknown function of the component User Registration. Performing a manipulation of the argument redirect results in redirect. This vulnerability is identified as CVE-2026-81342. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in MasterStudy LMS Plugin up to 3.7.42. This affects some unknown processing of the component User Registration. The manipulation of the argument redirect with an unknown input leads to a redirect vulnerability. CWE is classifying the issue as CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. This is going to have an impact on integrity. The summary by CVE is:

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.

It is possible to read the advisory at wpscan.com. This vulnerability is uniquely identified as CVE-2026-81342 since 08/26/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1204.001 according to MITRE ATT&CK.

Upgrading to version 3.7.43 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Name

• MasterStudy LMS Plugin

Version

• 3.7.0
• 3.7.1
• 3.7.2
• 3.7.3
• 3.7.4
• 3.7.5
• 3.7.6
• 3.7.7
• 3.7.8
• 3.7.9
• 3.7.10
• 3.7.11
• 3.7.12
• 3.7.13
• 3.7.14
• 3.7.15
• 3.7.16
• 3.7.17
• 3.7.18
• 3.7.19
• 3.7.20
• 3.7.21
• 3.7.22
• 3.7.23
• 3.7.24
• 3.7.25
• 3.7.26
• 3.7.27
• 3.7.28
• 3.7.29
• 3.7.30
• 3.7.31
• 3.7.32
• 3.7.33
• 3.7.34
• 3.7.35
• 3.7.36
• 3.7.37
• 3.7.38
• 3.7.39
• 3.7.40
• 3.7.41
• 3.7.42

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