CVE-2026-39562 MEDIUM

CVE-2026-39562: WordPress Client Invoicing by Sprout Invoices plugin <= 20.8.10 - Broken Access Control vulnerability

Vendor Boldgrid
Product Client Invoicing by Sprout Invoices
Weakness CWE-862 · Missing authorization
Published April 8, 2026
Last update April 29, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

What the vulnerability does

01Description

Missing Authorization vulnerability in BoldGrid Client Invoicing by Sprout Invoices sprout-invoices allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Client Invoicing by Sprout Invoices: from n/a through <= 20.8.10.

Explanation of Vulnerability in Simple Terms

02Summary

Client Invoicing by Sprout Invoices versions 20.8.10 and earlier lack proper authorization checks, allowing unauthenticated attackers to modify invoice data over the network. The vulnerability does not expose sensitive information or disrupt service availability, but permits unauthorized changes to invoicing records. Site administrators should update to a version newer than 20.8.10.

What an attacker can do

03Attacker Capabilities

Modify invoice data without authentication.

Potential impact on your site

04Site Impact

Invoices can be altered by unauthorized parties, risking financial record integrity.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

April 8, 2026 CVE published
April 29, 2026 Record updated

Related vulnerabilities

08Related CVE