What’s Vulnerable › Vulnerabilities
CVE-2026-111958: Royal MCP < 1.5.7 - Authentication Bypass via Preview Link Token
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-22 · updated 2026-10-22
- Weakness: CWE-287
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
- Royal MCP: before 1.5.7 — fixed in 1.5.7
How to fix
Upgrade to a fixed version: Royal MCP 1.5.7. Check the vendor advisory for mitigations.
References
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