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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 Eventin是WordPress基金会的一款活动管理插件。 WordPress Eventin 4.1.22及之前版本存在授权问题漏洞，该漏洞源于权限检查功能仅验证可获取的wp_rest nonce，且对用户提供的status参数未进行白名单校验，导致未认证攻击者能够创建标记为completed的订单，此类订单会被统计为已售出且不会触发自动清理，从而持续消耗票务库存。

CVSS 5.3 · Medium EPSS 0.24% · P14

Affected Version Matrix 1

VendorProduct Version RangeStatus
arraytics Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce ≤ 4.1.22 affected
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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
Vulnerability Title
WordPress Eventin 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Eventin是WordPress基金会的一款活动管理插件。 WordPress Eventin 4.1.22及之前版本存在授权问题漏洞，该漏洞源于权限检查功能仅验证可获取的wp_rest nonce，且对用户提供的status参数未进行白名单校验，导致未认证攻击者能够创建标记为completed的订单，此类订单会被统计为已售出且不会触发自动清理，从而持续消耗票务库存。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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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Patches & Fixes for CVE-2026-12956 (1)

Security Blog Posts for CVE-2026-12956 (1)

Other References for CVE-2026-12956 (1)

Same Patch Batch · arraytics · 2026-09-09 · 4 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
CVE-2026-11821 5.4 MEDIUM Eventin <= 4.1.17 - Missing Authorization to Authenticated (Subscriber+) Notification Flow

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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