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CVE-2026-57702 – Unauthenticated Blind SQL Injection – Amelia WordPress Booking Plugin ≤ 2.4.2

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Summary

CVE-2026-57702 is a critical Blind SQL Injection vulnerability in the Amelia (ameliabooking) WordPress booking plugin, developed by Melograno Venture Studio, affecting all versions through 2.4.2. With a CVSS v3.1 score of 9.3 (Critical) and no authentication or user interaction required, any internet-facing WordPress site running an affected version of Amelia is immediately exposed to full database exfiltration by a remote, unauthenticated attacker. The vulnerability has been patched in version 2.4.3.

Technical details

  • Root cause: Improper neutralization of special elements in SQL commands (CWE-89) — attacker-controlled input is not sufficiently sanitized or parameterized before being incorporated into backend database queries, enabling blind SQL injection.
  • Trigger conditions: No authentication or user interaction is required. The vulnerability is exploitable by any unauthenticated remote attacker with network access to the WordPress site.
  • Attack vector: Network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N) — the attack can be executed directly from the internet against any exposed Amelia instance.
  • Impact: Blind SQL Injection with Scope:Changed (S:C) and Confidentiality:High (C:H) — attackers can systematically enumerate and extract the entire WordPress database, including user credentials, personally identifiable information (PII), booking records, and other sensitive data stored by the application. Availability is rated Low (A:L), reflecting potential for query-induced server-side disruption.

Affected software

  • Amelia (ameliabooking) WordPress plugin — all versions from initial release through 2.4.2 (inclusive), developed by Melograno Venture Studio.

Severity

  • CVSS v3.1 Base Score: 9.3 (Critical)
  • Vector String: 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 Amelia plugin to version 2.4.3 or later. The current version available on WordPress.org is 2.4.4. Updates can be applied directly from the WordPress admin dashboard under Plugins → Installed Plugins → Update Available.
  • If immediate patching is not feasible: Temporarily disable the Amelia plugin until the update can be applied, and restrict access to public-facing booking endpoints via web application firewall rules or network-level access controls to reduce exposure.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

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