# CVE-2026-85292: InvoicePlane authentication bypass via type juggling in User_Controller

Source: https://junglewise.ai/threats/cve-2026-85292-invoiceplane-is-a-self-hosted-open-source-application-for  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-25. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-85292 · Severity: medium · CVSS 4.8 · Published 2026-09-25

InvoicePlane is a self-hosted invoicing application that manages clients, invoices, and payments. Prior to version 1.7.2, the authorization check in the User_Controller used PHP's loose comparison operator, allowing type juggling attacks to bypass authentication and authorization checks under certain session configurations. An attacker could exploit this to gain unauthorized access to user accounts or administrative functions without valid credentials.

Technologies: [InvoicePlane](https://junglewise.ai/threats/technologies/invoiceplane). Vendors: [InvoicePlane](https://junglewise.ai/threats/vendors/invoiceplane).

## Quick answers

**Is CVE-2026-85292 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-85292 being exploited in the wild.

**How severe is CVE-2026-85292?** Medium severity, with a CVSS score of 4.8, published 25 September 2026.

**Which products and versions are affected?** InvoicePlane prior to 1.7.2.

**Is there a fix for CVE-2026-85292?** A patch was published on 2026-07-18: Fix merged to develop branch Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-85292 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-85292?** 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 stems from loose inequality comparison (!=) of session user_type values in the User_Controller's authorization check, which is vulnerable to PHP type juggling (e.g., true != 1 evaluates to false). This affects configurations with non-standard session backends that return unexpected scalar types. The fix switches to strict comparison (!==) with proper type casting to prevent type coercion attacks. Authentication/authorization bypass requires exploitation of the session comparison logic during request handling.

## Affected products

- InvoicePlane InvoicePlane prior to 1.7.2

## Timeline

- 2026-09-25: disclosed
- 2026-07-18: patched: Fix merged to develop branch

## References

- [https://github.com/InvoicePlane/InvoicePlane/commit/efa9f576faa93ba64bef52b09b119e81a5b22fcf](https://github.com/InvoicePlane/InvoicePlane/commit/efa9f576faa93ba64bef52b09b119e81a5b22fcf)
- [https://github.com/InvoicePlane/InvoicePlane/pull/1640](https://github.com/InvoicePlane/InvoicePlane/pull/1640)

## Related threats

- [InvoicePlane authorization bypass in guest quote operations](https://junglewise.ai/threats/cve-2026-55561-invoiceplane-is-a-self-hosted-open-source-application-for)
- [InvoicePlane missing object-level authorization in Users::form()](https://junglewise.ai/threats/cve-2026-100392-invoiceplane-is-a-self-hosted-open-source-application-for)
- [InvoicePlane authorization bypass in Users::form()](https://junglewise.ai/threats/cve-2026-100371-invoiceplane-is-a-self-hosted-open-source-application-for)
- [InvoicePlane privilege escalation via stale session validation](https://junglewise.ai/threats/cve-2026-88003-invoiceplane-is-a-self-hosted-open-source-application-for)
- [InvoicePlane stored XSS in client email field](https://junglewise.ai/threats/cve-2026-85293-invoiceplane-is-a-self-hosted-open-source-application-for)