Authenticated cross-user event deletion via unscoped lookup
Published Jul 3, 2026 · Updated Jul 3, 2026
Authorization bypass in Roskus Prospero Flow CRM before 5.5.3 allows remote authenticated users to delete other users' calendar events. CalendarDeleteEventController passes the user-controlled event ID to Calendar::find($id)->delete() without restricting the query by user_id or company_id. Any authenticated account that can reach the deletion route can destroy calendar events owned by other users, including users in other companies.
Summary
What happened
Authorization bypass in Roskus Prospero Flow CRM before 5.5.3 allows remote authenticated users to delete other users' calendar events. CalendarDeleteEventController passes the user-controlled event ID to Calendar::find($id)->delete() without restricting the query by user_id or company_id. Any authenticated account that can reach the deletion route can destroy calendar events owned by other users, including users in other companies.
The record
- CVE
- CVE-2026-59234
- Published
- Jul 3, 2026
- Updated
- Jul 3, 2026
- Vendor
- Roskus
- Product
- Prospero Flow CRM
- Classifications
- CWE-639, T1485
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 3, 2026CVE publishedPublication date reported by the CVE source.
- Jul 3, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0.0 <5.5.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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