EUVD-2026-39387
GHSA-7649-6hf2-rxrp
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Network-reachable, low complexity, no interaction; PR:L because a logged-in low-privilege account is required; high C/I from unauthorized data read and modification, no availability impact.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Lifecycle Timeline
1DescriptionCVE.org
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.
AnalysisAI
Broken access control in the Royal MCP WordPress plugin (versions up to and including 1.4.25) lets authenticated low-privilege users reach functionality that should be restricted, due to a missing authorization check. With a CVSS of 8.1 and high confidentiality and integrity impact, an attacker holding even a basic account can read and alter data they should not be able to touch. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated session at low privilege (CVSS PR:L) - the attacker must hold a valid WordPress account, so the most exposed deployments are those with open registration enabled or with many low-trust users (subscribers, customers, members). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Signals are moderately consistent and point to a real but not emergency-level priority. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker registers or obtains a low-privilege WordPress account (for example a subscriber on a site with open registration), then sends a crafted request directly to a Royal MCP action or endpoint that lacks a proper capability check. Because authorization is missing, the request succeeds and the attacker reads or modifies data normally reserved for higher-privileged roles. … |
| Remediation | No vendor-released patch version is identified at time of analysis; the data only confirms versions through 1.4.25 are affected, so administrators should monitor the Royal Plugins changelog and the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/royal-mcp/vulnerability/wordpress-royal-mcp-plugin-1-4-25-broken-access-control-vulnerability) and upgrade to the first release above 1.4.25 once published. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
24 hours: Audit WordPress infrastructure to identify installations using Royal MCP plugin; disable the plugin immediately if non-critical, or restrict access to trusted administrators only. …
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Broken access control in the Royal MCP WordPress plugin before 1.4.26 lets any authenticated low-privileged user (e.g. S
Broken access control in the Royal MCP WordPress plugin (versions 1.4.2 and earlier) allows remote attackers to invoke p
Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today