CVE-2026-111958

Royal MCP < 1.5.7 - Authentication Bypass via Preview Link Token

Unscored

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.

Assigner
WPScan
Published
2026-10-22
Updated
2026-10-22
Reserved
2026-10-17

Affected

VendorProductVersions
Unknown Royal MCP < 1.5.7 (affected)
others: unaffected

References

Full CVE JSON record (5.2)

API · GitHub · cve.org

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Royal MCP",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThan": "1.5.7",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Raphael P. Cigana"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "WPScan"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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\u0027s owning user, an administrator in the default configuration, across the entire REST API with no nonce, leading to full site takeover."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-287 Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-22T06:00:17.950Z",
        "orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
        "shortName": "WPScan"
      },
      "references": [
        {
          "tags": [
            "exploit",
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://wpscan.com/vulnerability/014f061c-54f3-491e-b4a0-85cfa6fb178b/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Royal MCP \u003c 1.5.7 - Authentication Bypass via Preview Link Token",
      "x_generator": {
        "engine": "WPScan CVE Generator"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
    "assignerShortName": "WPScan",
    "cveId": "CVE-2026-111958",
    "datePublished": "2026-10-22T06:00:17.950Z",
    "dateReserved": "2026-10-17T15:47:20.566Z",
    "dateUpdated": "2026-10-22T06:00:17.950Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}