CVE-2026-90922— Paid Member Subscriptions < 3.0.9 - Unauthenticated Membership Payment Bypass via PayPal Standard Amount and Currency Mismatch
Quick assessment
Affected
Unknown Paid Membership Subscriptions
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 插件“付费会员订阅”（Paid Membership Subscriptions）在 3.0.9 版本之前，在确认完成付款前，未验证支付提供商上报的金额和货币是否与待处理付款一致，从而允许未认证用户通过支付任意较低的金额来获取付费会员资格。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-90922
Vulnerability Information
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Vulnerability Title
Paid Member Subscriptions < 3.0.9 - Unauthenticated Membership Payment Bypass via PayPal Standard Amount and Currency Mismatch
Source: CVE Program / CVE List V5
Vulnerability Description
The Paid Membership Subscriptions WordPress plugin before 3.0.9 does not verify that the amount and currency reported by the payment provider match the pending payment before completing it, allowing unauthenticated users to obtain a paid membership by paying an arbitrary lower amount.
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 | Paid Membership Subscriptions | 0 ~ 3.0.9 | - |
|
II. Public POCs for CVE-2026-90922
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-90922 (1)
Same Patch Batch · Unknown · 2026-09-17 · 29 CVEs total
| CVE-2026-86801 | 8.8 HIGH | To Do List Member 1.4 - 1.6 - Unauthenticated Stored XSS, File Listing and Deletion via Un |
| CVE-2026-87963 | 8.6 HIGH | Yo 1.1 - 1.3.1 - Unauthenticated SQL Injection via username Parameter |
| CVE-2026-87829 | 4.3 MEDIUM | Checkout Field Manager < 7.9.7 - Subscriber+ Arbitrary Attachment Deletion via Unvalidated |
| CVE-2026-87831 | 4.3 MEDIUM | Checkout Field Manager < 7.9.7 - Subscriber+ Arbitrary Attachment Deletion via Customer Ad |
| CVE-2026-91017 | 3.7 LOW | Robokassa payment gateway for Woocommerce < 1.8.9 - Unauthenticated Payment Bypass via For |
| CVE-2025-15697 | Dictionary <= 1.0 - Reflected XSS via Multiple Parameters | |
| CVE-2026-85128 | Choose User Role at Registration for WooCommerce < 1.3.3 - Unauthenticated Privilege Escal | |
| CVE-2026-85130 | WPLP Cookie Consent < 4.4.4 - Unauthenticated Stored XSS via Consent Logs | |
| CVE-2026-86707 | Private Feed Key <= 0.1 - Unauthenticated Authentication Bypass via 'feedkey' Parameter | |
| CVE-2026-86709 | The Pressengine <= 1.0 - Unauthenticated Authentication Bypass | |
| CVE-2026-86710 | Login with QR <= 1.0.0 - Unauthenticated Authentication Bypass via 'autologin_code' Parame | |
| CVE-2026-86446 | LearnPress 4.4.3 - 4.4.6 - Unauthenticated Quiz Answer Disclosure via check-answer REST En | |
| CVE-2026-87836 | Comments Import & Export 2.1.11 - 2.5.3 - Author+ Comment PII Disclosure via Export | |
| CVE-2026-87786 | Dewa Kirim <= 1.0.0 - Unauthenticated Stored XSS via Checkout Coordinates | |
| CVE-2026-86824 | Newsletter < 9.3.8 - Unauthenticated Subscriber PII Disclosure and Modification via Predic | |
| CVE-2026-86788 | HT Mega 3.2.0 - 3.2.5 - Contributor+ Stored XSS via Section Headline Tag | |
| CVE-2026-88792 | Dictionary <= 1.0 - Unauthenticated Stored XSS via Direct Dictionary Update | |
| CVE-2026-88795 | wpShopGermany IT-RECHT KANZLEI < 2.4 - Unauthenticated RCE via Predictable API Token | |
| CVE-2026-88904 | PuppyFW <= 0.4.4 - Subscriber+ Arbitrary Blog Options Update and Deletion Leading to Privi | |
| CVE-2026-90923 | Autopay < 5.0.1 - Unauthenticated Cross-Customer Order Payment Parameter Disclosure and De |
Showing top 20 of 29 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same vendor: Unknown
-
CVE-2026-87831
Checkout Field Manager < 7.9.7 - Subscriber+ Arbitrary Attac -
CVE-2026-87829
Checkout Field Manager < 7.9.7 - Subscriber+ Arbitrary Attac -
CVE-2026-91017
Robokassa payment gateway for Woocommerce < 1.8.9 - Unauthen -
CVE-2026-86801
To Do List Member 1.4 - 1.6 - Unauthenticated Stored XSS, Fi -
CVE-2026-87963
Yo 1.1 - 1.3.1 - Unauthenticated SQL Injection via username
V. Comments for CVE-2026-90922
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