Description
The WP Event Solution (Eventin) plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 4.1.22 via the create_item() handler for the /wp-json/eventin/v2/orders REST endpoint. The endpoint's create_item_permissions_check() function only verifies a wp_rest nonce (which is leaked to every visitor through the etn-public script's localized_data_obj on every frontend page) and accepts a user-supplied 'status' value in prepare_item_for_database() with no whitelist validation. This makes it possible for unauthenticated attackers to create etn-order posts with status='completed' that are counted as sold by etn_get_sold_tickets_by_event(); because the auto-cleanup wp_schedule_single_event() in create_item() only fires for status='pending' orders, the forged completed orders persist indefinitely and exhaust ticket inventory.
Published: 2026-09-09
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Unauthorized inventory depletion via unauthenticated order creation
Action: Immediate Patch
AI Analysis

Impact

The Eventin plugin for WordPress fails to properly authorize the REST endpoint used to create orders. The API accepts a user-supplied 'status' field without whitelisting, allowing an unauthenticated attacker to create completed orders that are counted as sold. This flaw can cause purchase volume to increase illegitimately, deplete ticket inventory, and effectively deny service to legitimate customers.

Affected Systems

Any WordPress site that has the Eventin plugin installed with a version of 4.1.22 or earlier is impacted. The vulnerability exists in the create_item() handler and its permission check within the /wp-json/eventin/v2/orders endpoint.

Risk and Exploitability

The CVSS score of 5.3 indicates moderate severity. EPSS is not available, and the vulnerability is not listed in the CISA KEV catalog, indicating limited evidence of exploitation in the wild. The attack vector is a publicly accessible REST route that does not require authentication; therefore, the barrier to exploitation is low and a site admin can exploit the flaw from any user or guest role.

Generated by OpenCVE AI on September 9, 2026 at 05:12 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade Eventin to a version newer than 4.1.22.
  • If upgrade is not immediately possible, block unauthenticated access to the /wp-json/eventin/v2/orders endpoint using a security plugin or .htaccess rule.
  • After remediation, monitor order records for unexpected completed orders and verify inventory counts for anomalies.

Generated by OpenCVE AI on September 9, 2026 at 05:12 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Sun, 13 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Arraytics
Arraytics eventin – Event Calendar, Event Registration, Tickets & Booking (ai Powered)
Wordpress
Wordpress wordpress
Vendors & Products Arraytics
Arraytics eventin – Event Calendar, Event Registration, Tickets & Booking (ai Powered)
Wordpress
Wordpress wordpress

Wed, 09 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 09 Sep 2026 02:30:00 +0000

Type Values Removed Values Added
Description The WP Event Solution (Eventin) plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 4.1.22 via the create_item() handler for the /wp-json/eventin/v2/orders REST endpoint. The endpoint's create_item_permissions_check() function only verifies a wp_rest nonce (which is leaked to every visitor through the etn-public script's localized_data_obj on every frontend page) and accepts a user-supplied 'status' value in prepare_item_for_database() with no whitelist validation. This makes it possible for unauthenticated attackers to create etn-order posts with status='completed' that are counted as sold by etn_get_sold_tickets_by_event(); because the auto-cleanup wp_schedule_single_event() in create_item() only fires for status='pending' orders, the forged completed orders persist indefinitely and exhaust ticket inventory.
Title Eventin <= 4.1.22 - Missing Authorization to Unauthenticated Arbitrary Order Creation and Status Manipulation via 'status' Parameter
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

Subscriptions

Arraytics Eventin – Event Calendar, Event Registration, Tickets & Booking (ai Powered)
Wordpress Wordpress
cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-09-09T13:55:02.316Z

Reserved: 2026-06-22T21:20:42.007Z

Link: CVE-2026-12956

cve-icon Vulnrichment

Updated: 2026-09-09T13:54:51.443Z

cve-icon NVD

Status : Deferred

Published: 2026-09-09T03:17:22.470

Modified: 2026-09-09T15:33:47.627

Link: CVE-2026-12956

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-13T20:02:49Z

Weaknesses