CVE-2026-100392

InvoicePlane: Primary Administrator Privilege Downgrade via `Users::form()` (Missing Object-Level Authorization)

HIGH
7
CVSS Score
Published: September 28, 2026 at 08:16 PM UTC
Updated: September 30, 2026 at 07:57 PM UTC
1 product affected across 1 vendorInvoicePlane

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Severity
HIGH7
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. In version 1.7.2, Users::form() performs no object-level authorization check on user_id = 1. A Secondary Administrator (user_type = 1, user_id != 1) can rewrite the Primary Administrator's user_type to 2 (Guest / read-only), destroying the root account's privilege and locking the legitimate owner out of the instance. At time of publication, there are no publicly available patches.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7HIGHGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-863

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