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CVE-2026-65759 – Unauthenticated Payment & Order Forgery – EasyStore extension for Joomla version…

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Summary

CVE-2026-65759 is a high-severity business logic vulnerability (CWE-284: Improper Access Control) in the EasyStore e-commerce extension for Joomla by JoomShaper, affecting all versions from 1.0.0 through 2.0.1. The flaw allows unauthenticated attackers to forge payment states and manipulate order records for any order on the platform, with a CVSS 4.0 score of 8.7 (High). A patched release, version 2.0.2, was published by JoomShaper on July 23, 2026.

Technical details

  • Root cause: The order-repayment endpoint (OrderController.php:299) performs an unguarded database write ($orm->update('#__easystore_orders', $data, 'id')) that blindly accepts payment and order status values from client-supplied JSON, with no server-side authentication check, CSRF token validation, or order-ownership verification.
  • Trigger conditions: No authentication, prior session, or user interaction is required. Any network-accessible attacker can submit a crafted HTTP request directly to the vulnerable endpoint.
  • Attack vector: Network (AV:N), no authentication required (PR:N), no user interaction required (UI:N), low attack complexity (AC:L), no special preconditions (AT:N).
  • Impact: An unauthenticated attacker can mark any order as paid without completing a real payment transaction, potentially triggering fulfillment of goods or services without charge. The same endpoint permits overwriting of arbitrary order fields — including customer identifiers, shipping addresses, and discount values — for any order in the system, regardless of which customer placed it.

Affected software

  • EasyStore extension for Joomla (JoomShaper): versions 1.0.0 through 2.0.1 (all releases prior to 2.0.2)
    • Compatible with Joomla 4, 5, and 6

Severity

  • CVSS 4.0 Base Score: 8.7 (High)
  • CVSS 4.0 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
  • CWE: CWE-284 – Improper Access Control

Mitigation and recommended actions

  • Immediate – apply the vendor patch: Upgrade EasyStore to version 2.0.2 or later, released July 23, 2026. The fix enforces a session token, verifies that the order belongs to the authenticated caller, and reads payment status from the stored order record rather than from client-supplied request data.
  • If immediate patching is not feasible: Restrict public network access to EasyStore’s order-repayment and order-management endpoints at the web server or WAF layer until the patch can be applied. For storefronts not actively processing orders, consider temporarily taking the shop offline.
  • Post-patch: Audit order records for anomalous payment state changes — specifically, orders marked as paid with no corresponding payment gateway transaction — to identify any exploitation that may have occurred prior to patching.

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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