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CVE-2026-56061 – Unauthenticated Broken Access Control – Subscriptions for WooCommerce (WP Swings…

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Summary

CVE-2026-56061 is a high-severity Broken Access Control vulnerability (CWE-862: Missing Authorization) affecting the Subscriptions for WooCommerce WordPress plugin by WP Swings, in all versions up to and including 1.9.5. The flaw is exploitable over the network with no authentication or user interaction required, and results in a high-integrity impact. With 10,000+ active installations, the potential exposure across internet-facing WordPress stores is significant.

Technical details

  • Root cause: Missing authorization checks (CWE-862) within the plugin’s Subscription Box feature, allowing unauthenticated requests to reach privileged functionality.
  • Trigger conditions: No authentication, no user interaction, and no special configuration required — any unauthenticated remote attacker can send a crafted HTTP request to the affected endpoint.
  • Attack vector: Network-accessible (AV:N), low complexity (AC:L), no privileges (PR:N), no user interaction (UI:N).
  • Impact: High Integrity impact (I:H) — unauthenticated attackers can perform unauthorized operations on subscription data via the Subscription Box feature, bypassing access controls that are intended to be restricted to authenticated users or administrators. No Confidentiality or Availability impact is indicated by the CVSS vector.

Affected software

  • Subscriptions for WooCommerce (by WP Swings) — all versions ≤ 1.9.5

Severity

  • CVSS v3.1 Base Score: 7.5 (HIGH)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Mitigation and recommended actions

  • Immediate: Update the Subscriptions for WooCommerce plugin to version 1.9.6 or later. Version 1.9.6 (released May 19, 2026) explicitly addresses vulnerability fixes for the Subscription Box feature, as confirmed in the official plugin changelog on WordPress.org.
  • If immediate patching is not possible: Restrict unauthenticated access to WordPress AJAX and REST API endpoints at the network or web application firewall level as a temporary measure, and monitor for anomalous subscription activity.

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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