CVE-2026-121633— Order Tracking < 3.6.0 - Unauthenticated Payment Confirmation Forgery via PayPal IPN Listener
Quick assessment
Affected
Unknown Order Tracking
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.
Order Tracking WordPress 插件 3.6.0 之前的版本在将订单标记为“已付款”之前，未验证 PayPal 付款通知是否已发送至商户账户，也未核对通知中的金额是否与订单总额相符。这可能导致未经身份验证的攻击者通过向自己的 PayPal 账户支付一笔微不足道的金额，将任意订单标记为已付款。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-121633
Vulnerability Information
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Vulnerability Title
Order Tracking < 3.6.0 - Unauthenticated Payment Confirmation Forgery via PayPal IPN Listener
Source: CVE Program / CVE List V5
Vulnerability Description
The Order Tracking WordPress plugin before 3.6.0 does not verify that a PayPal payment notification was sent to the merchant's account, or that its amount matches the order total, before marking an order as paid, which could allow unauthenticated attackers to mark arbitrary orders as paid using a trivial payment to their own PayPal account.
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 | Order Tracking | 0 ~ 3.6.0 | - |
|
II. Public POCs for CVE-2026-121633
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Other References for CVE-2026-121633 (1)
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https://wpscan.com/vulnerability/5eafeeb0-0bea-4647-a178-d5a2f2282afa/ exploit vdb-entry technical-description
Same Patch Batch · Unknown · 2026-11-06 · 30 CVEs total
| CVE-2026-118423 | 10.0 CRITICAL | WP Libre Form 1.5.0.1 - Unauthenticated RCE via Arbitrary File Upload |
| CVE-2026-88800 | 9.1 CRITICAL | MDJM Event Management and Mobile Events Manager <= 1.7.8.7 - Unauthenticated Arbitrary Rol |
| CVE-2026-88799 | 8.8 HIGH | MDJM Event Management and Mobile Events Manager <= 1.7.8.7 - Subscriber+ Account Takeover |
| CVE-2026-88801 | 8.0 HIGH | MDJM Event Management and Mobile Events Manager <= 1.7.8.7 - Subscriber+ Stored XSS via Ro |
| CVE-2026-121636 | 5.3 MEDIUM | Quick Event Manager 9.9.5 - 9.18 - Unauthenticated PayPal IPN Verification Bypass via the |
| CVE-2026-118166 | 4.8 MEDIUM | MC4WP: Mailchimp for WordPress < 4.15.0 - Unauthenticated Arbitrary Shortcode Execution vi |
| CVE-2026-113615 | GS JWT Authentication <= 1.0.0 - Unauthenticated Privilege Escalation via SQLi | |
| CVE-2026-118239 | AutomatorWP < 6.0.7 - Unauthenticated Zoom/AWeber Integration Connection Hijack via OAuth | |
| CVE-2026-118188 | PublishPress Revisions 3.9.0 - 4.2.0 - Subscriber+ Unpublished Content Disclosure | |
| CVE-2026-115673 | Anti-Spam by CleanTalk < 6.91 - Unauthenticated Stored XSS via Comment Author Email | |
| CVE-2026-118167 | MC4WP: Mailchimp for WordPress < 4.15.0 - Unauthenticated Subscription Audience Override | |
| CVE-2026-118187 | PublishPress Revisions < 4.3.1 - Contributor+ Unpublished Content Disclosure via IDOR | |
| CVE-2026-118186 | PublishPress Revisions 3.6.0 - 4.2.0 - Contributor+ Unapproved Content Publishing via Revi | |
| CVE-2026-86606 | iubenda < 3.13.7 - Unauthenticated Stored XSS via Cookie Block HTML Parser | |
| CVE-2026-110813 | Advanced Custom Fields (ACF®) < 6.8.11 - Unauthenticated Stored XSS via HTML Attribute Nam | |
| CVE-2026-110525 | MCB Stats <= 1.0.0 - Unauthenticated Stored XSS via User-Agent | |
| CVE-2026-92396 | Blocks for ShopEngine < 2.4.4 - Contributor+ Stored XSS via gutenova_store_css | |
| CVE-2026-12967 | WCFM Membership < 2.12.1 - Subscriber+ Payment Verification Bypass | |
| CVE-2026-87784 | Cool Media Filter <= 1.0.1 - Subscriber+ Privilege Escalation via role_permission | |
| CVE-2026-119259 | All-in-One Video Gallery < 5.1.0 - Unauthenticated Views and Duration Post Meta Write |
Showing top 20 of 30 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same vendor: Unknown
-
CVE-2026-121636
Quick Event Manager 9.9.5 - 9.18 - Unauthenticated PayPal IP -
CVE-2026-118166
MC4WP: Mailchimp for WordPress < 4.15.0 - Unauthenticated Ar -
CVE-2026-118423
WP Libre Form 1.5.0.1 - Unauthenticated RCE via Arbitrary Fi -
CVE-2026-88801
MDJM Event Management and Mobile Events Manager <= 1.7.8.7 - -
CVE-2026-88800
MDJM Event Management and Mobile Events Manager <= 1.7.8.7 -