The Client Invoicing by Sprout Invoices plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 20.8.7 via deserialization of untrusted input. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
CVE-2025-64227 is a high severity with CVSS 8.1 Vulnerability issue affecting the Plugin Client Invoicing by Sprout Invoices – Easy Estimates and Invoices for WordPress. It affects Versions up to 20.8.7 and is fixed in 20.8.8.
CVE-2025-64227 is tracked for the Plugin Client Invoicing by Sprout Invoices – Easy Estimates and Invoices for WordPress as high severity with CVSS 8.1. The affected range is Versions up to 20.8.7. Update Client Invoicing by Sprout Invoices – Easy Estimates and Invoices for WordPress to 20.8.8 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
sprout-invoices
View on wordpress.org
|
| CVE | CVE-2025-64227 |
| Patched Versions |
20.8.8
|
| Affected Versions |
Versions up to 20.8.7
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Client Invoicing by Sprout Invoices <= 20.8.9 - Authenticated (Author+) Local File Inclusion
Client Invoicing by Sprout Invoices <= 20.8.10 - Missing Authorization
Client Invoicing by Sprout Invoices <= 20.8.8 - Missing Authorization
Client Invoicing by Sprout Invoices <= 20.8.0 - Insecure Direct Object Reference
Client Invoicing by Sprout Invoices – Easy Estimates and Invoices <= 20.8.1 - Missing Authorization
Client Invoicing by Sprout Invoices <= 19.9.6 - Authenticated Stored Cross-Site Scripting
Client Invoicing by Sprout Invoices <= 20.8.7 - Missing Authorization
Client Invoicing by Sprout Invoices – Easy Estimates and Invoices for WordPress <= 9.3 - Missing Authorization
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