CVE-2026-85293 InvoicePlane: Stored Cross-Site Scripting (XSS) via Client Email in Invoice and Quote Mailer Forms
An attacker with admin access can inject JavaScript via client email fields, leading to session hijacking when other admins view mailer forms.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-85293?
CVE-2026-85293 is a medium-severity cross-site scripting vulnerability in InvoicePlane, published on 25 Sep 2026. An attacker needs administrator access to exploit it, 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. In version 1.7.2-beta-1, InvoicePlane stores client_email values without enforcing email syntax and renders them unescaped inside double-quoted value attributes in the invoice mailer form and quote mailer form. An administrator who can edit a client can store attribute-breaking input, and, when the mailer is configured, JavaScript executes when another authenticated administrator opens the related mailer page. The script runs in the InvoicePlane origin and can perform same-origin actions with the victim's session. This issue is fixed in version 1.7.2.
Which versions are affected by CVE-2026-85293?
How do I fix CVE-2026-85293?
No fix has been published for CVE-2026-85293 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-2026-85293 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85293 exists.
Sources
Also known as GHSA-477r-xmgc-vcvj.