CVE-2026-9857 Details
Description
The Invoice123 plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.7.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the plugin's API key stored in wp_options, modify invoice plugin settings, and alter WooCommerce tax rate data in the wp_woocommerce_tax_rates table.
A vulnerability exists in the Invoice123 plugin for WordPress, specifically in versions through 1.7.0, allowing authorization bypass. The plugin fails to properly verify user authorization for certain actions. This flaw enables authenticated attackers with subscriber-level access or higher to overwrite the plugin's API key in the wp_options table, modify invoice settings, and change WooCommerce tax rate data in the wp_woocommerce_tax_rates table.
Users are advised to update the Invoice123 WordPress plugin to version 1.7.1 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 10, 2026CISA-ADP
Assessed Jul 10, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Invoice123 | <= 1.7.0 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 10, 2026 | CVE Modified | CISA-ADP |
| Jul 10, 2026 | New CVE Received | [email protected] |