InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. Prior to 1.7.2, InvoicePlane fails to revoke administrative privileges after a role downgrade because Admin_Controller trusts the user_type snapshot stored in an existing session instead of revalidating ip_users.user_type. When one administrator downgrades another account, the target's active session continues to authorize administrative requests.
The downgraded user can use Users::form() to set user_type back to 1, restoring the database role and making the privilege escalation persistent. This vulnerability is fixed in 1.7.2.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/InvoicePlane/InvoicePlane/commit/904847f4e87b66fd6743cf9cc6f…
security-advisories@github.com
https://github.com/InvoicePlane/InvoicePlane/commit/daa49ce3a50e0c93e01459b69c0…
security-advisories@github.com
https://github.com/InvoicePlane/InvoicePlane/releases/tag/v1.7.2
security-advisories@github.com
https://github.com/InvoicePlane/InvoicePlane/security/advisories/GHSA-25xj-pj36…
security-advisories@github.com