CVE-2026-26281

Received Received - Intake

Stored XSS in InvoicePlane Sumex View Enables Session Hijacking

Publication date: 2026-02-18

Last updated on: 2026-02-20

Assigner: GitHub, Inc.

Description

InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. A stored cross-site scripting (XSS) vulnerability in the Sumex invoice view allows an authenticated user with client and invoice management privileges to execute arbitrary JavaScript in the browser of any user viewing the invoice. This can lead to session hijacking, data theft, or other malicious actions on behalf of the victim user. Version 1.7.1 patches the issue.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-02-18

Last Modified

2026-02-20

Generated

2026-07-06

AI Q&A

2026-02-19

EPSS Evaluated

2026-07-05

NVD

CVE-2026-26281

Affected Vendors & Products

Vendor	Product	Version / Range
invoiceplane	invoiceplane	1.7.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability is a stored cross-site scripting (XSS) issue in the Sumex invoice view of InvoicePlane, a self-hosted open source application for managing invoices, clients, and payments.

An authenticated user who has client and invoice management privileges can inject arbitrary JavaScript code that will be executed in the browser of any user viewing the affected invoice.

Impact Analysis

This vulnerability can lead to session hijacking, data theft, or other malicious actions performed on behalf of the victim user.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, you should upgrade InvoicePlane to version 1.7.1 or later, as this version patches the stored cross-site scripting (XSS) issue in the Sumex invoice view.

Additionally, ensure that only trusted users have client and invoice management privileges, since the vulnerability requires authenticated access with these privileges.

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