CVE-2026-59234
Authorization Bypass Through User-Controlled Key in Prospero Flow CRM calendar event deletion
Description
Authorization Bypass Through User-Controlled Key (CWE-639) in CalendarDeleteEventController (app/Http/Controllers/Calendar/CalendarDeleteEventController.php), exposed at GET /calendar/event/delete/{id}, in Prospero Flow CRM before 5.5.3 allows a remote, authenticated attacker to delete arbitrary calendar events belonging to other users by manipulating the {id} path parameter, because the delete handler resolves the record with Calendar::find($id)->delete() and performs no ownership check (no user_id/company_id scoping) before deletion. This results in unauthorized destruction of other users' calendar events across the platform.
INFO
Published Date :
July 3, 2026, 12:47 p.m.
Last Modified :
July 3, 2026, 12:47 p.m.
Remotely Exploit :
Yes !
Source :
Secur0
Affected Products
The following products are affected by CVE-2026-59234
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | MEDIUM | 4daa8cea-433a-44bd-9456-53b127fc289a |
Solution
- Check event ownership before deletion.
- Verify user permissions.
- Update Prospero Flow CRM to version 5.5.3 or later.
- Implement proper scoping for event deletion.
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CVE-2026-59234 vulnerability anywhere in the article.