Easy Invoice <= 2.1.19 - Unauthenticated Arbitrary Quote Accept/Decline and Invoice Creation via easy_invoice_accept_quote / easy_invoice_decline_quote AJAX Actions

Wordfence Intelligence   >   Vulnerability Database   >   Easy Invoice <= 2.1.19 - Unauthenticated Arbitrary Quote Accept/Decline and Invoice Creation via easy_invoice_accept_quote / easy_invoice_decline_quote AJAX Actions
5.3
Missing Authorization
CVE CVE-2026-9021
CVSS 5.3 (Medium)
Publicly Published July 8, 2026
Last Updated July 9, 2026
Researcher PeterPatter - -

Description

The Easy Invoice plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 2.1.19. This is due to the plugin registering the easy_invoice_accept_quote and easy_invoice_decline_quote AJAX actions via wp_ajax_nopriv_ hooks and relying solely on a quote-scoped nonce that is rendered into the publicly accessible single quote template, combined with an ownership check that is gated behind an off-by-default Pro option (easy_invoice_pro_restrict_quote_to_client). This makes it possible for unauthenticated attackers to accept or decline arbitrary published quotes — and, depending on the configured accept action, automatically convert them into invoices (and even email them to the client) — by harvesting the per-quote nonce from the public quote page and submitting it to admin-ajax.

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Vulnerability Details for Easy Invoice – Invoice Generator, PDF Quotes & Payments

Easy Invoice – Invoice Generator, PDF Quotes & Payments

Software Type Plugin
Software Slug easy-invoice (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.2.20, or a newer patched version
Affected Version
  • <= 2.2.19
Patched Version
  • 2.2.20

Recent vulnerabilities in Easy Invoice – Invoice Generator, PDF Quotes & Payments

Easy Invoice – Invoice Generator, PDF Quotes & Payments <= 2.1.19 - Unauthenticated Remote Code Execution
9.8
CVE-2026-48836
Jun 1, 2026
Researcher: Nguyen Dinh Hai (HaiND)
Easy Invoice <= 2.1.4 - Authenticated (Administrator+) Local File Inclusion
6.6
CVE-2025-66115
Dec 15, 2025
Researcher: Tarcísio Luchesi(Poystick)
Easy Invoice <= 2.0.9 - Unauthenticated Stored Cross-Site Scripting
7.2
CVE-2025-6324
Oct 29, 2025
Researcher: Ryan Novotny
# Title CVE ID CVSS Researchers Date
1 Easy Invoice – Invoice Generator, PDF Quotes & Payments <= 2.1.19 - Unauthenticated Remote Code Execution CVE-2026-48836 9.8 Nguyen Dinh Hai (HaiND) June 1, 2026
2 Easy Invoice <= 2.1.4 - Authenticated (Administrator+) Local File Inclusion CVE-2025-66115 6.6 Tarcísio Luchesi(Poystick) December 15, 2025
3 Easy Invoice <= 2.0.9 - Unauthenticated Stored Cross-Site Scripting CVE-2025-6324 7.2 Ryan Novotny October 29, 2025
View more vulnerabilities in this software package View more vulnerabilities

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