CVE-2026-26281
Stored XSS in InvoicePlane Sumex View Enables Session Hijacking
Publication date: 2026-02-18
Last updated on: 2026-02-20
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| invoiceplane | invoiceplane | 1.7.0 |
Helpful Resources
Exploitability
| 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
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
This vulnerability can lead to session hijacking, data theft, or other malicious actions performed on behalf of the victim user.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
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.