CVE-2026-78365Network attack vector

Cross-tenant supplier disclosure and modification via IDOR

Published Aug 24, 2026 · Updated Aug 24, 2026

Authorization bypass in Roskus Prospero Flow CRM 4.0.0 through 5.3.1 allows remote authenticated users to access other tenants' suppliers. SupplierUpdateController::update() loads any supplied ID without a company_id constraint, mass-assigns the full request body including company_id, and returns fields not hidden by the model. Any authenticated account can disclose supplier bank and portal credentials, modify the record, and relocate it into its own tenant.

CVSS severity9.3
Critical
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Roskus Prospero Flow CRM 4.0.0 through 5.3.1 allows remote authenticated users to access other tenants' suppliers. SupplierUpdateController::update() loads any supplied ID without a company_id constraint, mass-assigns the full request body including company_id, and returns fields not hidden by the model. Any authenticated account can disclose supplier bank and portal credentials, modify the record, and relocate it into its own tenant.

The record

CVE
CVE-2026-78365
Published
Aug 24, 2026
Updated
Aug 24, 2026
Vendor
Roskus
Product
Prospero Flow CRM
Classifications
CWE-862, CWE-639, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 24, 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.

  1. Affected versionversion=4.0.0 <5.3.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Roskus · Prospero Flow CRMversion=4.0.0 <5.3.2

Published CVSS scores

9.3Secur0 CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
CWE-639Authorization Bypass Through User-Controlled Key
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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