How severe is CVE-2026-42743?

CVE-2026-42743 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-42743 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-42743?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-42743 have an EU (EUVD) identifier?

Yes. CVE-2026-42743 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36837.

When was CVE-2026-42743 published?

CVE-2026-42743 was published on 2026-06-15 and last updated on 2026-06-17.

CVE-2026-42743

CVE-2026-42743 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-347.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36837
Weakness: CWE-347
Published: 2026-06-15
Last modified: 2026-06-17

Description

Unauthenticated Broken Authentication in Masteriyo - LMS <= 2.1.8 versions.

Frequently asked questions

What is CVE-2026-42743?: Unauthenticated Broken Authentication in Masteriyo - LMS <= 2.1.8 versions.
How severe is CVE-2026-42743?: CVE-2026-42743 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-42743 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-42743?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-42743 have an EU (EUVD) identifier?: Yes. CVE-2026-42743 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36837.
When was CVE-2026-42743 published?: CVE-2026-42743 was published on 2026-06-15 and last updated on 2026-06-17.

References

https://patchstack.com/database/wordpress/plugin/learning-management-system/vulnerability/wordpress-masteriyo-lms-plugin-2-1-8-broken-authentication-vulnerability?_s_id=cve

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