CVE-2026-59236 Authorization bypass in Prospero Flow CRM Excel import allows cross-tenant record injection
Authenticated users can inject records into other tenants by manipulating the company_id in Excel imports, requiring an upgrade to fix.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-59236?
CVE-2026-59236 is a medium-severity missing authorization vulnerability in Roskus Prospero Flow CRM, published on 15 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Authorization Bypass Through User-Controlled Key (CWE-639) in the Excel import handlers (CustomerImport, LeadImport, ProductImport) in Roskus Prospero Flow CRM before 5.14.0 allows a remote, authenticated user of any role or company to create customer, lead, and product records inside another company's tenant via a spreadsheet whose company_id column points to the victim tenant, uploaded to POST /customer/import/excel/save, which maps company_id directly from the file and performs no check that it matches the authenticated user's company.
Weakness: CWE-639
Which versions are affected by CVE-2026-59236?
How do I fix CVE-2026-59236?
No fix has been published for CVE-2026-59236 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-59236 being exploited?
There is no known exploitation of CVE-2026-59236 in the wild and no public exploit code.
Sources
Also known as GHSA-rpp3-j482-5g39.