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  4. CVE 2026 81342 masterstudy lms 3743 unauthenticated open redirect
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Back to active CVEs
Medium · CVSS 4.7CVE-2026-81342

MasterStudy LMS < 3.7.43 - Unauthenticated Open RedirectCVE-2026-81342

Answer in brief

CVE-2026-81342 records a Medium severity (CVSS 4.7) vulnerability in MasterStudy LMS < 3.7.43 - Unauthenticated Open Redirect. The current sources do not mark it as known exploited. The current feed maps Unknown/MasterStudy LMS WordPress Plugin (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 29, 2026Updated Aug 31, 2026Source checked Oct 13, 2026First seen by HOL Aug 29, 2026Material review Aug 31, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 4.7
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 4.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/MasterStudy LMS WordPress Plugin (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Unknown/MasterStudy LMS WordPress Plugingeneric>=0 <3.7.433.7.43

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Unknown/MasterStudy LMS WordPress Plugin.
  2. 2Review the reported fix. Update Unknown/MasterStudy LMS WordPress Plugin to 3.7.43 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 29, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 31, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 29, 2026

Sources and claim methodology

  • Source referencewpscan.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • URL Redirection to Untrusted Site ('Open Redirect') in GitLabAlso CWE-601
  • Bit integrations <= 2.10.6 - Unauthenticated Stored Cross-Site Scripting via 'notification_content' Field via Public Bit Assist Webhook CallbackSame generic ecosystem
  • AcyMailing <= 11.1.0 - Unauthenticated Stored Cross-Site Scripting via 'customField[]' ParameterSame generic ecosystem
  • The macOS version of the DigiD app is not signed with Hardened RuntimeSame generic ecosystem
  • code-projects Online Reviewer System User Profile Update btn_functions.php dynamically-determined object attributesSame generic ecosystem
  • k2-fsa sherpa-onnx Offline Transducer Greedy Search Decoder offline-transducer-greedy-search-decoder.cc Decode buffer overflowSame generic ecosystem

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-601
Source
CVE List V5
Source checked
Oct 13, 2026
References
1 linked source
Open source record