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CVE-2026-59234— Authorization Bypass Through User-Controlled Key in Prospero Flow CRM calendar event deletion

Quick assessment

Affected
Roskus Prospero Flow CRM
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

roskus Prospero Flow CRM是roskus组织开源的一款基于 Laravel 13 构建的开源、多语言、多公司（白标）客户管理系统（CRM），支持 Docker 一键部署和 REST API 集成。 roskus Prospero Flow CRM 5.5.3之前版本存在授权问题漏洞，该漏洞源于CalendarDeleteEventController中通过用户控制密钥绕过授权，由于删除处理程序通过Calendar::find($id)->delete()解析记录且在删除前未执行所有权

AI Predicted 9.1 Difficulty: Easy EPSS 0.40% · P34

Possible ATT&CK Techniques 1 AI

T1199 · Trusted Relationship

Affected Version Matrix 1

VendorProduct Version RangeStatus
Roskus Prospero Flow CRM 1.0.0< 5.5.3 affected
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I. Basic Information for CVE-2026-59234

Vulnerability Information
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Vulnerability Title
Authorization Bypass Through User-Controlled Key in Prospero Flow CRM calendar event deletion
Source: CVE Program / CVE List V5
Vulnerability 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($id)->delete() and performs no ownership check (no user_id/company_id scoping) before deletion. This results in unauthorized destruction of other users' calendar events across the platform.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
roskus Prospero Flow CRM 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
roskus Prospero Flow CRM是roskus组织开源的一款基于 Laravel 13 构建的开源、多语言、多公司（白标）客户管理系统（CRM），支持 Docker 一键部署和 REST API 集成。 roskus Prospero Flow CRM 5.5.3之前版本存在授权问题漏洞，该漏洞源于CalendarDeleteEventController中通过用户控制密钥绕过授权，由于删除处理程序通过Calendar::find($id)->delete()解析记录且在删除前未执行所有权
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Roskus Prospero Flow CRM 1.0.0 ~ 5.5.3 cpe:2.3:a:roskus:prospero_flow_crm:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-59234

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III. Intelligence Information for CVE-2026-59234

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Patches & Fixes for CVE-2026-59234 (2)

Other References for CVE-2026-59234 (1)

IV. Related Vulnerabilities

Same product: Prospero Flow CRM
Same vendor: Roskus
Same weakness: CWE-639

V. Comments for CVE-2026-59234

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