CVE-2026-19539 IDOR in Prospero Flow CRM allows cross-tenant ticket read, hijacking, and deletion
Authenticated users can read, modify, or delete tickets from other companies due to missing authorization checks in the ticket management component.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19539?
CVE-2026-19539 is a high-severity missing authorization vulnerability in Roskus Prospero Flow CRM, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Authorization Bypass Through User-Controlled Key in the ticket management component in Roskus Prospero Flow CRM before 5.4.9 allows authenticated users of any company to read the full content (title, description, and attachments) of tickets belonging to another company, to hijack another company's tickets by reassigning their company_id, and to delete another company's tickets without any authorization check, via the ticket's numeric identifier, because the read and save operations retrieve the record without constraining the query to the authenticated user's company, and the delete controller type-hints a generic Illuminate\Http\Request instead of the TicketDeleteRequest that would enforce the required permission.
Weakness: CWE-862
Which versions are affected by CVE-2026-19539?
How do I fix CVE-2026-19539?
No fix has been published for CVE-2026-19539 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-2026-19539 being exploited?
There is no known exploitation of CVE-2026-19539 in the wild and no public exploit code.
Sources
Also known as GHSA-2wg2-5v89-cgh7.