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CVE-2026-66682 – Unauthenticated Privilege Escalation – Abandoned Cart Pro for WooCommerce ≤ 10.4.0

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Summary

CVE-2026-66682 is a critical unauthenticated privilege escalation vulnerability in Abandoned Cart Pro for WooCommerce, a premium WordPress plugin by Tyche Softwares that extends WooCommerce stores with cart-recovery functionality. The flaw is classified as CWE-266 (Incorrect Privilege Assignment) and allows a remote, unauthenticated attacker to gain elevated privileges on an affected WordPress site. It carries a CVSS v3.1 base score of 9.8 (Critical).

Technical details

  • Root cause: CWE-266, Incorrect Privilege Assignment, within the plugin’s handling of privilege/authorization logic.
  • Trigger conditions: No authentication or user interaction is required to exploit the flaw.
  • Attack vector: Network — exploitable remotely over HTTP(S) against any internet-facing WordPress/WooCommerce site running the vulnerable plugin.
  • Impact: Successful exploitation lets an unauthenticated attacker escalate privileges, with confidentiality, integrity, and availability impacts all rated High — consistent with full site/account compromise (e.g., gaining administrative-level access).
  • Public exploit detail: At the time of writing, no public proof-of-concept or detailed exploitation writeup is available; only the CVE record and vulnerability classification have been published.

Affected software

  • Abandoned Cart Pro for WooCommerce (Tyche Softwares) — versions up to and including 10.4.0

Severity

  • CVSS v3.1 Base Score: 9.8 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Upgrade Abandoned Cart Pro for WooCommerce to a version released after 10.4.0 as soon as the vendor (Tyche Softwares) publishes a fixed release addressing this CVE.
  • If no patch is confirmed available: Restrict or disable the plugin on internet-facing WordPress/WooCommerce sites until a fix is confirmed, monitor site user accounts and admin roles for unauthorized changes, and review WordPress/WooCommerce access logs for anomalous privilege-related activity.
  • Maintain WordPress core, WooCommerce, and all plugins on current versions, and subscribe to the vendor’s changelog/release notes to confirm when a security fix for this CVE is issued.

References

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