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CVE-2026-66659 – Blind SQL Injection – Tablesome Table WordPress Plugin (≤ 1.2.9)

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Summary

CVE-2026-66659 is an unauthenticated, blind SQL injection vulnerability in the Tablesome Table WordPress plugin (developed by Essekia), affecting all versions through 1.2.9. The flaw stems from improper neutralization of special elements in SQL commands (CWE-89), and it carries a CVSS v3.1 base score of 9.3 (Critical), reflecting a network-exploitable, no-authentication, no-user-interaction attack.

Technical details

  • Root cause: The plugin fails to properly sanitize/parameterize user-supplied input before it is used in SQL queries, enabling blind SQL injection (CAPEC-7).
  • Trigger conditions: An attacker sends crafted input to a vulnerable plugin endpoint on a WordPress site running the plugin; no authentication or user interaction is required.
  • Attack vector: Network — exploitable remotely over HTTP(S) against any internet-facing WordPress site running the vulnerable plugin.
  • Impact: High confidentiality impact (unauthorized read/extraction of database contents via blind SQLi) and low availability impact; integrity is not directly impacted per the published vector.

Affected software

  • Tablesome Table – Contact Form DB (WordPress plugin by Essekia), package tablesome, all versions through 1.2.9.

Severity

  • CVSS v3.1 Base Score: 9.3 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L

Mitigation and recommended actions

  • Immediate: Check for a Tablesome Table plugin release beyond 1.2.9 and update immediately; at the time of publication no version number above 1.2.9 fixing this specific issue has been confirmed in the plugin’s public changelog, so verify with the vendor before assuming a fix is available.
  • If no patch is confirmed: Deactivate or remove the Tablesome Table plugin from internet-facing WordPress sites until a fix is verified; restrict access to WordPress admin-ajax/REST endpoints associated with the plugin via a WAF or reverse proxy; monitor database and web logs for anomalous or error-based query patterns indicative of SQL injection probing.

References

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