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PatchSiren cyber security CVE debrief

CVE-2026-42743 ThemeGrill CVE debrief

CVE-2026-42743 is a MEDIUM severity vulnerability (CVSS Score: 6.5) affecting Masteriyo - LMS plugin versions up to 2.1.8. The vulnerability is caused by unauthenticated broken authentication. The CVE was published on 2026-06-15T21:16:57.117Z and last modified on 2026-06-15T21:24:32.790Z.

Vendor
ThemeGrill
Product
Masteriyo - LMS
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-15
Original CVE updated
2026-06-15
Advisory published
2026-06-15
Advisory updated
2026-06-15

Who should care

Users of Masteriyo - LMS plugin versions up to 2.1.8 should apply patches or mitigations to prevent exploitation of this vulnerability.

Technical summary

The vulnerability has a CVSS vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N and is classified under CWE-347. It was reported by [email protected].

Defensive priority

MEDIUM

Recommended defensive actions

  • Apply patches or updates to Masteriyo - LMS plugin to version above 2.1.8.
  • Review and implement secure authentication mechanisms.

Evidence notes

Evidence suggests that the vulnerability was reported by Patchstack (reference_domain_candidate).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-42743 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-42743

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-42743 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-42743

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.