CVE-2025-41077: Viafirma Inbox

High severity, CVSS 8.1. EPSS: 0.2% chance of exploitation in the next 30 days.

IDOR vulnerability has been found in Viafirma Inbox v4.5.13 that allows any authenticated user without privileges in the application to list all users, access and modify their data. This allows the user's email addresses to be modified and, subsequently, using the password recovery functionality to access the application by impersonating any user, including those with administrative permissions.

Affected products

• Viafirma Inbox: before 4.5.27 (fixed in 4.5.27)

Published 2026-01-12. Last modified 2026-06-17.