CVE-2026-16623

CVEs › CVE-2026-16623

Description

The Create Block WordPress plugin before 2.10.0 does not correctly escape user-supplied text before writing it into a generated PHP pattern file, allowing a multisite subsite administrator (who holds the capability gating this action but is denied the capability that normally gates PHP file editing) to inject and execute arbitrary PHP code on the server.

Overview

State: PUBLISHED
Assigner (CNA): WPScan
CVSS severity: —
CVSS score: —
CVSS vector: —
Effective score: no score available from CNA, NVD, or AI yet
CWE(s): CWE-94 Improper Control of Generation of Code ('Code Injection')
Reserved: 2026-07-22
Published: 2026-08-04 06:00 UTC
Last updated: 2026-08-04 17:30 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/16xxx/CVE-2026-16623.json

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Affected products (1)

Vendor	Product	Versions	Platforms
Unknown	Create Block Theme	`0` (affected)	—

Vendor references (1)

References embedded in the original CVE record by the assigning CNA.

https://wpscan.com/vulnerability/19c7fdaa-5e75-481d-884c-68fdb2fb8f8d/ exploitvdb-entrytechnical-description

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-16623.json.

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "HIGH",
              "scope": "CHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-16623",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-04T17:30:43.382701Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-94",
                "description": "CWE-94 Improper Control of Generation of Code ('Code Injection')",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-04T17:30:47.067Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Create Block Theme",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThan": "2.10.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Pavan Saxena (Rootkid)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "WPScan"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Create Block  WordPress plugin before 2.10.0 does not correctly escape user-supplied text before writing it into a generated PHP pattern file, allowing a multisite subsite administrator (who holds the capability gating this action but is denied the capability that normally gates PHP file editing) to inject and execute arbitrary PHP code on the server."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-94 Improper Control of Generation of Code ('Code Injection')",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-04T06:00:08.523Z",
        "orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
        "shortName": "WPScan"
      },
      "references": [
        {
          "tags": [
            "exploit",
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://wpscan.com/vulnerability/19c7fdaa-5e75-481d-884c-68fdb2fb8f8d/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Create Block Theme < 2.10.0 - Admin+ PHP Code Injection via Pattern Save (Multisite)",
      "x_generator": {
        "engine": "WPScan CVE Generator"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
    "assignerShortName": "WPScan",
    "cveId": "CVE-2026-16623",
    "datePublished": "2026-08-04T06:00:08.523Z",
    "dateReserved": "2026-07-22T14:59:28.691Z",
    "dateUpdated": "2026-08-04T17:30:47.067Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}