CVE-2026-104642

Simple Shopping Cart 5.1.3 - 5.3.2 - Authenticated (Contributor+) Payment Bypass

2026-10-19 00:00

Strategic Overview

Status: Patched in 5.3.3
Affected Plugin: Simple Shopping Cart
Affected Version: 5.1.3 – 5.3.2
CVSS: 4.3Medium
Weakness type: CWE-602 · Client-Side Enforcement of Server-Side Security
CVE: CVE-2026-104642

View all Simple Shopping Cart vulnerabilities

At a glance

CVE-2026-104642 is a medium-severity Client-Side Enforcement of Server-Side Security vulnerability in the Simple Shopping Cart WordPress plugin, affecting versions 5.1.3 – 5.3.2. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 5.3.3; sites on affected versions should update now. Disclosed October 2026, reported by Haemanth VJ.

Vulnerability Overview

The Simple Shopping Cart plugin for WordPress is vulnerable to Payment Bypass in versions 5.1.3 through 5.3.2. This is due to a lack of server-side payment verification. This makes it possible for authenticated attackers, with contributor-level access and above, to bypass payments.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-602: Client-Side Enforcement of Server-Side Security

The product is composed of a server that relies on the client to implement a mechanism that is intended to protect the server.

Remediation

Update to version 5.3.3, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Simple Shopping Cart 5.3.3 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-104642 https://www.wordfence.com/threat-intel/vulnerabilities/id/d42730e8-2d18-46b7-bb26-432132e23db1 https://nvd.nist.gov/vuln/detail/CVE-2026-104642

Related records

Same weakness class

5.3CVE-2026-104641: Simple Shopping Cart <= 5.3.2 Payment BypassCVE-2026-104641

Other vulnerabilities in Simple Shopping Cart

CVSS Vector

4.3

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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