CVE-2026-78365

critical · 9.3

Authorization Bypass Through User-Controlled Key in the supplier API in Roskus Prospero Flow CRM 4.0.0 through 5.3.1 allows any authenticated user to read and modify another company's supplier record, and to reassign it to their own company, via a PUT request to /api/supplier/{id} setting company_id in the body.

9.3

CVSS

0.5%

EPSS (exploit prob.)

43rd

EPSS percentile

2026-08-24

Published

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-639CWE-862

References

https://github.com/Roskus/prospero-flow-crm/commit/4a52477e6ed66afa436814c80e7bcd68670dd596
https://github.com/Roskus/prospero-flow-crm/releases/tag/v5.5.3
https://secur0.com/en/cna/cve-list/cve-2026-78365-idor-supplier-api-cross-tenant-update

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-78365