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Easy PayPal & Stripe Buy Now Button 1.8 — 2.0.5 - Unauthenticated Arbitrary Payment Amount Reduction

CVE-2026-90987Published · Updated

Action summary

Affected: 1.8 – 2.0.5Update to 2.0.6 or newer

All remediation steps
Watch plugin
Severity
Medium5.3
CVSS
5.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-602 Client-Side Enforcement of Server-Side Security
Required access
No account needed
Exploit prediction (EPSS)
0.2% chance in 30 days14th percentile
CISA KEV
Not listed
On this page8

Am I affected?

Easy PayPal & Stripe Buy Now Button wp-ecommerce-paypal

  1. Affected1.8 – 2.0.5
  2. Patched in2.0.6

Update to 2.0.6 or newer.

You are affected if you run 1.8 – 2.0.5. Version 2.0.6 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Easy PayPal & Stripe Buy Now Button.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 2.0.6, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Easy PayPal & Stripe Buy Now Button to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to JunHee CHO.

The Easy PayPal & Stripe Buy Now Button plugin for WordPress is vulnerable to Payment Manipulation in versions 1.8 through 2.0.5. This is due to server-side derivation of the payment amount from client-supplied POST fields without verification against the price configured in the saved button or shortcode. This makes it possible for unauthenticated attackers to purchase goods for an arbitrary lower price by supplying a manipulated payment amount in the checkout request.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in Easy PayPal & Stripe Buy Now Button

All 8
More vulnerabilities in Easy PayPal & Stripe Buy Now Button
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting
≤2.0.4Update to 2.0.5
CVE-2026-65517
Medium4.4Authenticated (Administrator+) Stored Cross-Site Scripting
≤2.0Update to 2.0.1
CVE-2025-47623
High7.2Unauthenticated Open Redirect
≤1.9Update to 1.9.1
CVE-2024-43236
Medium4.3Cross-Site Request Forgery to Settings Update
≤2.1Update to 2.2
CVE-2024-1719
Medium4.3Cross-Site Request Forgery
≤1.8.1Update to 1.8.2
CVE-2023-51683

Timeline

  1. CVE published

    Severity medium, CVSS 5.3

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
EPSS
Exploit Prediction Scoring System by FIRST.org.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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