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CVE-2026-12956— Eventin <= 4.1.22 - Missing Authorization to Unauthenticated Arbitrary Order Creation and Status Manipulation via 'status' Parameter

Quick assessment

Affected
arraytics Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 插件 The WP Event Solution (Eventin) 在 4.1.22 及之前版本中，其 REST API 端点 的 处理器存在 缺失授权（Missing Authorization） 漏洞。 该端点的 函数仅验证 密钥（nonce），而此密钥会通过 脚本中的 泄露给所有前端页面的访问者。此外， 函数直接接受用户输入的 值，且未进行白名单校验。 这导致 未认证的攻击者 能够创建状态为 的 帖子。由于 函数会将这些订单计为已售出，而 中自动清理机制 仅对 的订单生效，因此这些伪造的

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-12956

Vulnerability Information
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Vulnerability Title
Eventin <= 4.1.22 - Missing Authorization to Unauthenticated Arbitrary Order Creation and Status Manipulation via 'status' Parameter
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
arraytics Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce 0 ~ 4.1.22 -

II. Public POCs for CVE-2026-12956

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III. Intelligence Information for CVE-2026-12956

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Other References for CVE-2026-12956 (7)

Same Patch Batch · arraytics · 2026-09-09 · 3 CVEs total

CVE-2026-15667 7.5 HIGH Eventin <= 4.1.22 - Authenticated (Contirbutor+) Local File Inclusion via 'event_layout' P
CVE-2026-15406 7.5 HIGH Eventin <= 4.1.22 - Authenticated (Custom+) Local File Inclusion via 'event_layout' Parame

IV. Related Vulnerabilities

Same product: Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce
Same vendor: arraytics
Same weakness: CWE-862

V. Comments for CVE-2026-12956

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