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CVE-2026-59240— IDOR in Prospero Flow CRM allows deletion of other users' notifications

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 1.0.0版本至5.5.1之前版本存在授权问题漏洞，该漏洞源于DeleteNotificationController::delete()方法中存在不安全直接对象引用，未验证user_id或company_id所有权，导致任意认证用户可删除

CVSS 6.9 · Medium EPSS 0.48% · P39

Affected Version Matrix 1

VendorProduct Version RangeStatus
Roskus Prospero Flow CRM 1.0.0< 5.5.1 affected
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I. Basic Information for CVE-2026-59240

Vulnerability Information
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Vulnerability Title
IDOR in Prospero Flow CRM allows deletion of other users' notifications
Source: CVE Program / CVE List V5
Vulnerability Description
The vulnerability involves an Insecure Direct Object Reference (IDOR) in the `DeleteNotificationController::delete()` method at endpoint `GET /notification/delete/{id}`. The flaw allows any authenticated user, regardless of company or permissions, to delete notifications belonging to any other user in the system. The controller retrieves the target record with `Notification::findOrFail($id)` and deletes it without validating `user_id` or `company_id` ownership, unlike the sibling `SetNotificationReadAjaxController`, which correctly scopes lookups by `Auth::id()`. Because notification identifiers are sequential, an attacker can iterate over IDs to systematically delete notifications belonging to any user, denying them visibility of ticket alerts, task assignments, and other system events.
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:N/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 1.0.0版本至5.5.1之前版本存在授权问题漏洞，该漏洞源于DeleteNotificationController::delete()方法中存在不安全直接对象引用，未验证user_id或company_id所有权，导致任意认证用户可删除
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 ~ 5.5.1 -

II. Public POCs for CVE-2026-59240

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III. Intelligence Information for CVE-2026-59240

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Patches & Fixes for CVE-2026-59240 (2)

Vendor Advisories for CVE-2026-59240 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-59240

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