CVE-2026-26270 InvoicePlane has Stored Cross-Site Scripting Issue in Identifier Formatting

Medium 5.4 Published 18 Feb 2026 Updated 19 Feb 2026

Authenticated users can inject malicious scripts into invoice identifiers, leading to code execution when other users view invoices or the dashboard.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-26270?

CVE-2026-26270 is a medium-severity cross-site scripting vulnerability in InvoicePlane, published on 18 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. A Stored Cross-Site Scripting (XSS) vulnerability exists in InvoicePlane (latest version) that allows an authenticated user with permissions to manage Invoice Groups to inject malicious JavaScript into the "Identifier Format" field. This script executes when any user views the invoice list or the main dashboard. Version 1.7.1 patches the issue.

Weakness: CWE-79

Which versions are affected by CVE-2026-26270?

It affects 1 product.

Products include Invoiceplane Invoiceplane.

How do I fix CVE-2026-26270?

No fix has been published for CVE-2026-26270 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-26270 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-26270 exists.

Sources

Also known as GHSA-432m-jv69-qp5j.