CVE-2026-85291 InvoicePlane IDOR: Horizontal Privilege Escalation via Password Change Without Authorization Check
Authenticated secondary administrators can take over primary administrator accounts by changing passwords without authorization checks, leading to privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-85291?
CVE-2026-85291 is a medium-severity missing authorization vulnerability in InvoicePlane, published on 25 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. Prior to 1.7.2, InvoicePlane's Users::change_password() method accepts a user_id from the URL and updates that account's password without an object-level authorization check. An authenticated secondary administrator can target the primary administrator account and replace its password without knowing the current password. The attacker can then take over the primary account and access its data and privileges. This issue is fixed in version 1.7.2.
Weakness: CWE-639
Which versions are affected by CVE-2026-85291?
How do I fix CVE-2026-85291?
No fix has been published for CVE-2026-85291 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-85291 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85291 exists.
Sources
Also known as GHSA-x38q-xhjj-jr8w.