WordPress Plugin Vulnerabilities
Royal MCP < 1.5.7 - Authentication Bypass via Preview Link Token
Description
The plugin 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.
Proof of Concept
Affects Plugins
Fixed in 1.5.7 References
CVE
Classification
Type
AUTHBYPASS
OWASP top 10
CWE
CVSS
Miscellaneous
Original Researcher
Raphael P. Cigana
Submitter
Raphael P. Cigana
Submitter website
Verified
Yes
WPVDB ID
Timeline
Publicly Published
2026-10-20 (about 2 days ago)
Added
2026-10-20 (about 1 day ago)
Last Updated
2026-10-20 (about 1 day ago)
