CVE-2026-42746 Overview
CVE-2026-42746 is a sensitive data exposure vulnerability in the ZAYTECH Smart Online Order for Clover WordPress plugin (clover-online-orders). The flaw affects all versions up to and including 1.6.0. It is classified under CWE-201: Insertion of Sensitive Information Into Sent Data.
An unauthenticated attacker can retrieve embedded sensitive data over the network without user interaction. The issue carries a CVSS 3.1 base score of 7.3 and an attack vector of Network with low attack complexity.
Critical Impact
Unauthenticated remote attackers can extract sensitive data embedded in plugin responses, potentially exposing API keys, configuration details, or customer order information from affected WordPress sites.
Affected Products
- ZAYTECH Smart Online Order for Clover plugin for WordPress
- All plugin versions from initial release through 1.6.0
- WordPress sites integrating Clover online ordering via the clover-online-orders plugin
Discovery Timeline
- 2026-05-27 - CVE-2026-42746 published to NVD
- 2026-05-27 - Last updated in NVD database
Technical Details for CVE-2026-42746
Vulnerability Analysis
The vulnerability stems from improper handling of sensitive information in server responses produced by the Smart Online Order for Clover plugin. The plugin embeds sensitive data into output that is reachable by unauthenticated clients. Attackers can request the affected endpoints and parse the response to harvest information that should not be exposed.
The weakness aligns with [CWE-201], where sensitive data is included in transmitted content without adequate access control or filtering. Because the plugin integrates with the Clover commerce platform, exposed data may include integration tokens, merchant identifiers, or order metadata.
With an EPSS score of 0.037%, public exploitation probability is currently low. However, the network-accessible, no-authentication exposure makes opportunistic scanning straightforward once the endpoint pattern is known.
Root Cause
The root cause is the plugin's inclusion of sensitive values in data sent to clients without restricting access or sanitizing the payload. The vendor advisory indicates the issue affects all versions through 1.6.0. See the Patchstack Vulnerability Database Entry for technical details.
Attack Vector
An attacker sends crafted HTTP requests to plugin-exposed endpoints on a vulnerable WordPress site. No credentials or user interaction are required. The attacker parses returned responses to extract embedded sensitive fields. Refer to the Patchstack advisory for endpoint specifics, as no verified proof-of-concept code is publicly available.
Detection Methods for CVE-2026-42746
Indicators of Compromise
- Unauthenticated HTTP GET or POST requests targeting clover-online-orders plugin endpoints under /wp-content/plugins/clover-online-orders/ or related REST routes
- Repeated requests from a single source IP enumerating plugin paths or admin-ajax actions tied to the plugin
- Unusual outbound traffic from web servers to attacker-controlled hosts after plugin endpoint access
Detection Strategies
- Inventory WordPress sites and confirm the installed version of the clover-online-orders plugin; flag any instance at or below version 1.6.0
- Inspect web server access logs for unauthenticated requests to plugin endpoints returning HTTP 200 responses with large or unexpected payloads
- Apply web application firewall rules to alert on response bodies containing patterns consistent with Clover API tokens or merchant identifiers
Monitoring Recommendations
- Enable verbose HTTP logging on WordPress hosts and forward logs to a centralized analytics platform for retroactive search
- Alert on spikes in requests to plugin-specific URLs from non-customer IP ranges
- Monitor Clover merchant dashboards for unexpected API activity that may indicate token compromise
How to Mitigate CVE-2026-42746
Immediate Actions Required
- Identify all WordPress installations running Smart Online Order for Clover and prioritize those with public-facing exposure
- Restrict access to the plugin's endpoints via web server rules or WAF until a patched version is deployed
- Rotate any Clover integration credentials, API tokens, and secrets that may have been embedded in plugin responses
Patch Information
At publication, the advisory indicates the vulnerability affects versions through 1.6.0. Site administrators should monitor the Patchstack Vulnerability Database Entry and the official ZAYTECH plugin listing for a fixed release, and update immediately once available.
Workarounds
- Temporarily deactivate the clover-online-orders plugin on sites where online ordering is not actively in use
- Place affected endpoints behind authentication or IP allowlisting at the reverse proxy or WAF layer
- Audit and revoke Clover credentials stored within the WordPress database and re-issue them after patching
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
