CVE-2026-57393 Overview
CVE-2026-57393 is a sensitive information disclosure vulnerability in the EDGARROJAS WooCommerce PDF Invoice Builder plugin for WordPress. The flaw affects all versions up to and including 2.0.8. Authenticated attackers with low-level privileges can retrieve embedded sensitive data from the plugin over the network. The issue is categorized under [CWE-497]: Exposure of Sensitive System Information to an Unauthorized Control Sphere. Successful exploitation compromises confidentiality of stored data without affecting integrity or availability.
Critical Impact
Authenticated attackers can extract sensitive embedded data from WooCommerce PDF Invoice Builder installations running version 2.0.8 or earlier, exposing customer and business information.
Affected Products
- EDGARROJAS WooCommerce PDF Invoice Builder plugin for WordPress
- All versions from n/a through 2.0.8
- WordPress sites running WooCommerce with the woo-pdf-invoice-builder plugin
Discovery Timeline
- 2026-07-13 - CVE-2026-57393 published to NVD
- 2026-07-13 - Last updated in NVD database
Technical Details for CVE-2026-57393
Vulnerability Analysis
The vulnerability resides in the woo-pdf-invoice-builder WordPress plugin developed by EDGARROJAS. The plugin generates PDF invoices for WooCommerce orders and embeds sensitive system or business data into accessible resources. An authenticated user with low privileges can reach these resources over the network and retrieve information that should remain restricted.
The issue maps to [CWE-497], which describes exposure of sensitive system information to unauthorized actors. The confidentiality impact is high because embedded data can include order details, customer records, or configuration metadata. Integrity and availability remain unaffected, since the flaw only permits reading data rather than modifying it.
The Exploit Prediction Scoring System (EPSS) rates this vulnerability at 0.27%, placing it in the 18.9th percentile. No public exploit code has been observed, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
Root Cause
The plugin fails to enforce adequate access controls around resources that contain embedded sensitive data. Authenticated but low-privileged accounts can request these resources and receive information that should be limited to administrators or the order owner.
Attack Vector
Exploitation requires network access and a valid low-privileged account on the target WordPress site. The attacker sends crafted requests to endpoints exposed by the woo-pdf-invoice-builder plugin. No user interaction is required, and the scope remains unchanged. Refer to the Patchstack advisory for additional context. No verified proof-of-concept code is publicly available.
Detection Methods for CVE-2026-57393
Indicators of Compromise
- Unexpected access patterns from low-privileged WordPress accounts targeting woo-pdf-invoice-builder endpoints
- Elevated download or read requests against invoice-related PHP files in wp-content/plugins/woo-pdf-invoice-builder/
- Outbound data transfers correlated with authenticated sessions belonging to non-administrative users
Detection Strategies
- Audit WordPress access logs for repeated requests to plugin endpoints from accounts without invoice access rights
- Correlate authentication events with plugin resource requests to identify anomalous data retrieval
- Inventory installed WordPress plugins and flag any instance of woo-pdf-invoice-builder at version 2.0.8 or earlier
Monitoring Recommendations
- Enable verbose logging on the WordPress web server and forward logs to a centralized SIEM for analysis
- Monitor for unusual volumes of PDF or invoice-related requests tied to non-administrator sessions
- Alert on plugin file access outside expected administrative workflows
How to Mitigate CVE-2026-57393
Immediate Actions Required
- Identify all WordPress installations running the woo-pdf-invoice-builder plugin at version 2.0.8 or earlier
- Restrict low-privileged accounts and review role assignments within WooCommerce and WordPress
- Rotate credentials and review recent access logs for signs of unauthorized data retrieval
Patch Information
No fixed version is listed in the current NVD entry. Consult the Patchstack advisory and the vendor's plugin page for the latest patched release, and apply it as soon as it becomes available.
Workarounds
- Deactivate the woo-pdf-invoice-builder plugin until a patched version is confirmed and installed
- Limit account creation and reduce the number of low-privileged accounts on the WordPress site
- Place the WordPress admin interface behind a web application firewall with rules to restrict plugin endpoint access
- Enforce strong authentication, including multi-factor authentication, for all WordPress user roles
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
