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CVE-2026-77780— Unvalidated bank account and card foreign keys in the Prospero Flow CRM transaction save endpoint allow cross-tenant disclosure of banking identifiers

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组织开源的一款客户关系管理软件。 roskus Prospero Flow CRM 4.9.1版本至5.14.0版本存在授权问题漏洞，该漏洞源于transaction save端点存在用户控制的密钥授权绕过问题，未对公司所有权进行检查，可能导致具有交易和会计创建权限的用户披露其他公司的银行账户名称、银行名称和卡号后四位。

CVSS 5.3 · Medium EPSS 0.44% · P37

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
Roskus Prospero Flow CRM 4.9.1< 5.14.2 affected
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I. Basic Information for CVE-2026-77780

Vulnerability Information
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Vulnerability Title
Unvalidated bank account and card foreign keys in the Prospero Flow CRM transaction save endpoint allow cross-tenant disclosure of banking identifiers
Source: CVE Program / CVE List V5
Vulnerability Description
Authorization Bypass Through User-Controlled Key in the transaction save endpoint in Roskus Prospero Flow CRM 4.9.1 through 5.14.0 allows a user with transaction and accounting creation permissions to disclose another company's bank account name, bank name and card last four digits via a bank_account_id or bank_card_id belonging to that company in POST /transaction/save, which is persisted and rendered without any company ownership check.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/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组织开源的一款客户关系管理软件。 roskus Prospero Flow CRM 4.9.1版本至5.14.0版本存在授权问题漏洞，该漏洞源于transaction save端点存在用户控制的密钥授权绕过问题，未对公司所有权进行检查，可能导致具有交易和会计创建权限的用户披露其他公司的银行账户名称、银行名称和卡号后四位。
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 4.9.1 ~ 5.14.2 -

II. Public POCs for CVE-2026-77780

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III. Intelligence Information for CVE-2026-77780

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Patches & Fixes for CVE-2026-77780 (2)

Other References for CVE-2026-77780 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-77780

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