CVE Catalog

CVE-2026-12956

MediumCVSS 5.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.24%

15th percentile - higher than 15% of all known CVEs

Summary

The WP Event Solution (Eventin) plugin for WordPress up to version 4.1.22 has a missing authorization vulnerability in the REST endpoint /wp-json/eventin/v2/orders. The permission check only verifies a nonce that is leaked to every visitor and accepts a user-supplied 'status' value without validation. This allows unauthenticated attackers to create orders with status 'completed' that are counted as sold, exhausting ticket inventory.

Risk Assessment

An attacker can create fake orders without authentication, leading to depletion of available tickets and disruption of sales. This can cause financial losses and loss of customer trust.

Recommendation

Update the Eventin plugin to the latest patched version. If not possible, temporarily disable the REST endpoint or apply WAF rules to block unauthorized requests.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS