Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.6.8/includes/pa
- https://plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.6.8/includes/pa
- https://plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.6.8/includes/pa
- https://plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.6.8/includes/pa
- https://plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.6.8/includes/pa
- https://plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.7.0/includes/pa
- https://plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.7.0/includes/pa
- https://plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.7.0/includes/pa
- https://plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.7.0/includes/pa
- https://plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.7.0/includes/pa
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3594935%40saskaita123
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7d4e685a-0462-447f-a63
FAQ
What is CVE-2026-9857?
CVE-2026-9857 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 per...
How severe is CVE-2026-9857?
CVE-2026-9857 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-9857?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.