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CVE-2026-84907— Eventin < 4.1.24 - Unauthenticated Order and Attendee Status Reset via Payment REST Endpoint

Quick assessment

Affected
Unknown Eventin
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.

在 4.1.24 版本之前的 Eventin WordPress 插件，在启用离线（本地）支付方式时，未对订单确认过程进行适当的授权验证：它依赖一个对未认证访客暴露的非ce（nonce），且从不检查调用者是否拥有该订单。这使得未认证的攻击者能够将任意现有订单及其参会者重置为待处理状态，从而导致已支付的票券失效。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Eventin 4.1.5< 4.1.24 affected
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I. Basic Information for CVE-2026-84907

Vulnerability Information
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Vulnerability Title
Eventin < 4.1.24 - Unauthenticated Order and Attendee Status Reset via Payment REST Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
The Eventin WordPress plugin before 4.1.24 does not properly authorise order finalisation when its offline (local) payment method is enabled, relying on a nonce that is exposed to unauthenticated visitors and never checking that the caller owns the order, allowing unauthenticated attackers to reset any existing order and its attendees to a pending state and thereby invalidate paid tickets.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unknown Eventin 4.1.5 ~ 4.1.24 -

II. Public POCs for CVE-2026-84907

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III. Intelligence Information for CVE-2026-84907

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Other References for CVE-2026-84907 (1)

Same Patch Batch · Unknown · 2026-09-16 · 46 CVEs total

CVE-2026-13407 6.1 MEDIUM Royal Elementor Addons < 1.7.1067 - Unauthenticated Stored HTML Injection in Form Notifica
CVE-2026-84906 5.3 MEDIUM Eventin < 4.1.24 - Unauthenticated Payment Bypass via Stripe and PayPal Cross-Order Transa
CVE-2026-86475 5.3 MEDIUM Appointment Hour Booking < 1.5.95 - Unauthenticated Booking Capacity Bypass via Multi-Appo
CVE-2026-19857 4.8 MEDIUM Formidable Forms < 6.35 - Unauthenticated Arbitrary Shortcode Execution via [entry_key] Cu
CVE-2026-76552 WP Import Export Lite < 3.9.33 - Authenticated Arbitrary File Upload via Remote Image Impo
CVE-2026-85349 FluentBoards < 2.0.15 - Subscriber+ Private Board Membership Disclosure via IDOR
CVE-2026-76555 WP Import Export Lite < 3.9.33 - Authenticated Sensitive File Disclosure via Existing File
CVE-2026-76557 WP Import Export Lite < 3.9.33 - Authenticated SQLi via Import Options
CVE-2026-76551 WP Import Export Lite < 3.9.33 - Authenticated RCE via Export Field PHP Function
CVE-2026-74926 MultiVendorX 5.0.0 - 5.0.15 - Subscriber+ Arbitrary Store Data and Ownership Overwrite via
CVE-2026-76553 WP Import Export Lite < 3.9.33 - Authenticated Arbitrary Directory Deletion via Template P
CVE-2026-78472 Ni WooCommerce Sales Report < 4.2.0 - Unauthenticated SQLi via 'sort' Parameter
CVE-2026-82124 Schema & Structured Data for WP & AMP < 1.66 - Unauthenticated Password-Protected Post Con
CVE-2026-77702 Eventin < 4.1.24 - Unauthenticated Ticket Price Rewrite via order_token
CVE-2026-84829 Optimole < 4.2.12 - Unauthenticated Stored XSS via Srcset Descriptor Parameter
CVE-2026-84905 Eventin < 4.1.24 - Contributor+ User Creation via Speaker Creation
CVE-2026-84088 Xpro Elementor Addons < 1.7.9 - Contributor+ Stored XSS via Interactive Circle Widget
CVE-2026-82126 Schema & Structured Data for WP & AMP 1.63 - 1.65 - Contributor+ Non-Public Post Content D
CVE-2026-82125 Schema & Structured Data for WP & AMP 1.46 - 1.65 - Unauthenticated Non-Public Comment Con
CVE-2026-76550 WP Import Export Lite < 3.9.34 - Authenticated RCE via Export Template Path Traversal

Showing top 20 of 46 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Eventin
Same vendor: Unknown

V. Comments for CVE-2026-84907

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