CVE-2026-78365
IDOR and missing authorization in Prospero Flow CRM supplier API allows cross-tenant read and modification
Description
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.
INFO
Published Date :
Aug. 24, 2026, 1:19 p.m.
Last Modified :
Aug. 24, 2026, 1:19 p.m.
Remotely Exploit :
Yes !
Source :
4daa8cea-433a-44bd-9456-53b127fc289a
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | CRITICAL | 4daa8cea-433a-44bd-9456-53b127fc289a | ||||
| CVSS 4.0 | CRITICAL | 4daa8cea-433a-44bd-9456-53b127fc289a |
Solution
- Update the software to the latest version.
- Apply vendor-supplied patches.
- Review access controls for API endpoints.
- Validate company_id on all supplier updates.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-78365.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-78365 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-78365
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-78365 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-78365 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 4daa8cea-433a-44bd-9456-53b127fc289a
Aug. 24, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/Roskus/prospero-flow-crm', 'vendor': 'Roskus', 'modules': ['Supplier API'], 'product': 'Prospero Flow CRM', 'versions': [{'status': 'affected', 'version': '4.0.0', 'lessThan': '5.3.2', 'versionType': 'semver'}], 'programFiles': ['app/Http/Controllers/Api/Supplier/SupplierUpdateController.php'], 'defaultStatus': 'unaffected'}] Added Description 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. Added CVSS V4.0 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 Added CWE CWE-639 Added CWE CWE-862 Added Reference https://github.com/Roskus/prospero-flow-crm/commit/4a52477e6ed66afa436814c80e7bcd68670dd596 Added Reference https://github.com/Roskus/prospero-flow-crm/releases/tag/v5.5.3 Added Reference https://secur0.com/en/cna/cve-list/cve-2026-78365-idor-supplier-api-cross-tenant-update