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CVE-2026-28001 – Unauthenticated SQL Injection – WP Directory Kit WordPress Plugin ≤ 1.5.4

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Summary

CVE-2026-28001 is an unauthenticated SQL injection vulnerability in the WP Directory Kit WordPress plugin, affecting versions up to and including 1.5.4. The flaw allows a remote, unauthenticated attacker to inject malicious SQL via an improperly sanitized parameter, resulting in a critical severity rating.

Technical details

  • Root cause: the plugin fails to properly neutralize/escape a user-supplied parameter before it is used in an SQL query (CWE-89, Improper Neutralization of Special Elements used in an SQL Command).
  • Trigger condition: an attacker sends a crafted request containing SQL syntax in the vulnerable parameter to a site running the affected plugin; no authentication or user interaction is required.
  • Attack vector: network-based, exploitable directly over HTTP against the exposed WordPress site.
  • Impact: high confidentiality impact (blind SQL injection can be used to extract data from the site’s database, such as user credentials or configuration data) with a low availability impact; no integrity impact.

Affected software

  • WP Directory Kit WordPress plugin, versions up to and including 1.5.4.

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: update the WP Directory Kit plugin to version 1.5.5 or later, where the parameter is properly sanitized/escaped.
  • If patching is not immediately possible: restrict or monitor public access to the affected endpoint/parameter, and deploy WAF rules to detect and block SQL injection payloads targeting the plugin until the update can be applied.

References

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