Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-83537— WP Express Checkout < 2.5.0 - Unauthenticated Payment Bypass via wpec_process_empty_payment

Quick assessment

Affected
Unknown WP Express Checkout
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.

WP Express Checkout WordPress 插件在 2.5.0 版本之前，在将订单标记为已支付前，未在服务端验证付款是否真正完成，从而允许未认证用户在不实际付款的情况下伪造一个“已完成”的订单。

CVSS 5.3 · Medium EPSS 0.16% · P6

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown WP Express Checkout < 2.5.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-83537

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
WP Express Checkout < 2.5.0 - Unauthenticated Payment Bypass via wpec_process_empty_payment
Source: CVE Program / CVE List V5
Vulnerability Description
The WP Express Checkout WordPress plugin before 2.5.0 does not verify server-side that a payment was actually completed before marking an order as paid, allowing unauthenticated users to forge a completed order without paying.
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 WP Express Checkout 0 ~ 2.5.0 -

II. Public POCs for CVE-2026-83537

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-83537

请登录查看更多情报信息。

Other References for CVE-2026-83537 (1)

Same Patch Batch · Unknown · 2026-09-09 · 28 CVEs total

CVE-2026-85117 6.5 MEDIUM Contact Form 7 Captcha 0.1.7 - 0.1.8 - Unauthenticated Arbitrary Shortcode Execution via F
CVE-2026-19855 6.5 MEDIUM Spam protection, Honeypot, Anti-Spam by CleanTalk < 6.87 - Unauthenticated Arbitrary Short
CVE-2026-80440 4.8 MEDIUM Hustle < 7.8.14.2 - Unauthenticated Arbitrary Shortcode Execution via Success Message Plac
CVE-2026-82185 WPLP Cookie Consent < 4.4.2 - Subscriber+ Banner Settings Overwrite and A/B Test Data Rese
CVE-2026-85132 WPLP Cookie Consent 4.0.2 - 4.4.1 - Subscriber+ Cookie Scan Schedule Disclosure via gcc_ge
CVE-2026-85133 WPLP Cookie Consent < 4.4.2 - Subscriber+ Missing Authorization via Multiple Settings AJAX
CVE-2026-85418 Orbit Fox < 3.0.9 - Contributor+ Stored XSS via Beaver Builder Pricing Table Widget
CVE-2026-84113 Quentn WP < 1.2.15 - Admin+ SQLi via 'orderby'/'order' Parameter
CVE-2026-84222 Kirki 6.2.1 - 6.2.5 - Unauthenticated Non-Public Post Content Disclosure via 'kirki_data'
CVE-2026-84068 Quentn WP 1.2.13 - 1.2.14 - Unauthenticated SQLi via 'qntn_wp' Parameter
CVE-2026-83541 Sina Extension for Elementor 3.7.1 - 3.10.3 - Contributor+ Stored XSS via Table Widget
CVE-2026-85037 Sunshine Photo Cart < 3.7 - Unauthenticated Price Manipulation via IDOR
CVE-2026-81741 Groundhogg < 4.7.2 - Open Redirect via 'redirect_to' Parameter
CVE-2026-81022 SupportCandy 3.3.6 - 3.5.2 - Unauthenticated Ticket Content Disclosure via Auth Code Leak
CVE-2026-13146 WP Travel < 12.0.2 - Unauthenticated Booking Payment State Tampering via IDOR
CVE-2026-82848 Masteriyo LMS 1.3.1 - 2.3.3 - Unauthenticated Course Enrollment Disclosure
CVE-2026-82184 WPLP Cookie Consent < 4.4.2 - Unauthenticated IAB TCF Consent Option Update
CVE-2026-80339 Payment Plugins for Stripe WooCommerce < 4.0.12 - Unauthenticated Customer PII Disclosure
CVE-2026-80340 Payment Plugins for PayPal WooCommerce < 2.0.26 - Unauthenticated Customer PII Disclosure
CVE-2026-80341 Payment Plugins for PayPal WooCommerce < 2.0.26 - Subscriber+ Stored Payment Method Assign

Showing top 20 of 28 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: WP Express Checkout
Same vendor: Unknown