How severe is CVE-2026-54842?

CVE-2026-54842 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-54842 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-54842?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-54842 have an EU (EUVD) identifier?

Yes. CVE-2026-54842 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39387.

When was CVE-2026-54842 published?

CVE-2026-54842 was published on 2026-06-25.

CVE-2026-54842

CVE-2026-54842 is a high-severity vulnerability with a CVSS 3.x base score of 8.1. 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-862.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39387
Weakness: CWE-862
Published: 2026-06-25
Last modified: 2026-06-25

Description

Missing Authorization vulnerability in Royal Plugins Royal MCP allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Royal MCP: from n/a through 1.4.25.

Frequently asked questions

What is CVE-2026-54842?: Missing Authorization vulnerability in Royal Plugins Royal MCP allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Royal MCP: from n/a through 1.4.25.
How severe is CVE-2026-54842?: CVE-2026-54842 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-54842 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-54842?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-54842 have an EU (EUVD) identifier?: Yes. CVE-2026-54842 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39387.
When was CVE-2026-54842 published?: CVE-2026-54842 was published on 2026-06-25.

References

https://patchstack.com/database/wordpress/plugin/royal-mcp/vulnerability/wordpress-royal-mcp-plugin-1-4-25-broken-access-control-vulnerability?_s_id=cve

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