CVE-2026-88003: InvoicePlane privilege escalation via stale session validation

CVE-2026-88003 · Severity: info · Published 2026-09-25

InvoicePlane is a self-hosted application for managing invoices, clients, and payments. An administrator can downgrade another admin account's privileges, but the downgraded user's active session continues to grant administrative access, allowing them to restore their own admin role and maintain persistent access. This affects versions prior to 1.7.2.

Technologies: InvoicePlane. Vendors: InvoicePlane.

Quick answers

Is CVE-2026-88003 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-88003 being exploited in the wild.
How severe is CVE-2026-88003?
Informational severity, published 25 September 2026.
Which products and versions are affected?
InvoicePlane prior to 1.7.2.
Is there a fix for CVE-2026-88003?
A patch was published on 2026-09-25: Fixed in version 1.7.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-88003 attacked?
It is attacked over the network.
Am I affected by CVE-2026-88003?
Check whether you run InvoicePlane at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability exists in Admin_Controller, which validates a user's role based only on the user_type value stored in the session at login rather than re-checking the current database value on each request. When an administrator downgrades another account, the downgraded user can continue making administrative API calls via their existing session and use Users::form() to restore user_type to 1 in the database, making the privilege escalation persistent. The fix adds role re-validation per request and prevents user_type modification via POST parameters.

Affected products

  • InvoicePlane InvoicePlane prior to 1.7.2

Timeline

  • 2026-09-25: disclosed
  • 2026-09-25: patched: Fixed in version 1.7.2

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.