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CVE-2026-84906— Eventin < 4.1.24 - Unauthenticated Payment Bypass via Stripe and PayPal Cross-Order Transaction Replay

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.

Eventin WordPress 插件在 4.1.24 版本之前，未验证已完成的支付是否对应其所属的订单，仅确认支付网关报告该交易成功，而未校验其金额、币种或所属订单。这允许未认证的访问者通过重放一笔真实低价值支付的交易，将任意金额的未支付订单标记为已支付。

CVSS 5.3 · Medium EPSS 0.14% · P4

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Eventin < 4.1.24 affected
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I. Basic Information for CVE-2026-84906

Vulnerability Information
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Vulnerability Title
Eventin < 4.1.24 - Unauthenticated Payment Bypass via Stripe and PayPal Cross-Order Transaction Replay
Source: CVE Program / CVE List V5
Vulnerability Description
The Eventin WordPress plugin before 4.1.24 does not verify that a completed payment corresponds to the order it is applied to, confirming only that the payment gateway reports the transaction as successful, not its amount, currency, or which order it belongs to, allowing unauthenticated visitors to mark unpaid orders of any value as paid by replaying the transaction of a single genuine low-value payment.
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
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unknown Eventin 0 ~ 4.1.24 -

II. Public POCs for CVE-2026-84906

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III. Intelligence Information for CVE-2026-84906

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News Coverage for CVE-2026-84906 (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-2026-86475 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-2026-84907 Eventin < 4.1.24 - Unauthenticated Order and Attendee Status Reset via Payment REST Endpoi
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

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