MasterStudy LMS < 3.7.43 - Unauthenticated Open Redirect

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-81342
StatePUBLISHED
AssignerWPScan
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-29 06:17:58 UTC
Updated2026-08-31 20:14:36 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 4.7 MEDIUM from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

EPSS: 0.001710000 probability, percentile 0.066430000 (date 2026-09-02)

Problem Types: CWE-601 | CWE-601 URL Redirection to Untrusted Site ('Open Redirect') | CWE-601 CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED4.7MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary4.7MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Unknown MasterStudy LMS WordPress Plugin affected 3.7.43 semver Not specified

References

ReferenceSourceLinkTags
wpscan.com/vulnerability/f6f89b50-3087-4fb6-ba12-93fdc1bcc9ed [email protected] wpscan.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Abiodun Victor (en)

CNA: WPScan (en)

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