CVE-2026-59233 PUBLISHED

Missing Authorization in the permission management component in Roskus Prospero Flow CRM before 5.2.1 allows any authenticated user to grant any role, including their own, the complete set of application permissions via a crafted POST request to the permission save endpoint, which performs no authorization check before synchronizing the submitted permissions to the specified role.

Upgrade to version 5.2.1 or higher.

• k1di3 finder
• Cristian Fernández Cornejo analyst
• Xoán M. Otero Jorge analyst
• Secur0 CNA coordinator
• Gustavo Novaro remediation developer

• https://github.com/Roskus/prospero-flow-crm/commit/86a7d6557bd111518a221f4575ad6e36087e19d3
• https://github.com/Roskus/prospero-flow-crm/releases/tag/v5.5.3
• https://secur0.com/en/cna/cve-list/cve-2026-59233-missing-authorization-in-prospero-flow-crm-permission-endpoint

• CWE-639 Authorization bypass through User-Controlled key CWE

• CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs