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OpenAdvisories
High · 7.5 CVE-2026-111958 EUVD-2026-108015GHSA-5h77-wc4p-vj34

Royal MCP < 1.5.7 - Authentication Bypass via Preview Link Token

Published Oct 22, 2026 · Updated Oct 22, 2026 · Assigned by WPScan

Description

The Royal MCP WordPress plugin before 1.5.7 does not limit a preview-link token to the single preview it was issued for, so any party that obtains a valid token is authenticated as the token's owning user, an administrator in the default configuration, across the entire REST API with no nonce, leading to full site takeover.

Affected products

VendorProductAffectedFixed
— Royal MCP < 1.5.7 1.5.7

References