CVE-2026-77759Network attack vector

Cross-tenant transaction disclosure via unscoped record lookup

Published Aug 21, 2026 · Updated Aug 21, 2026

Authorization bypass in Roskus Prospero Flow CRM 5.0.0 through 5.3.5 allows remote authenticated users to read other companies' transactions. TransactionReadController::read() passes the route ID to Transaction::find($id) without company_id scoping, while the route requires authentication but no transaction-read permission. Any authenticated account on a multi-company instance can enumerate incrementing IDs and disclose transaction names, types, amounts, statuses, and dates.

CVSS severity8.7
High
EPSS probability0.32%
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 5.0.0 through 5.3.5 allows remote authenticated users to read other companies' transactions. TransactionReadController::read() passes the route ID to Transaction::find($id) without company_id scoping, while the route requires authentication but no transaction-read permission. Any authenticated account on a multi-company instance can enumerate incrementing IDs and disclose transaction names, types, amounts, statuses, and dates.

The record

CVE
CVE-2026-77759
Published
Aug 21, 2026
Updated
Aug 21, 2026
Vendor
Roskus
Product
Prospero Flow CRM
Classifications
CWE-862, CWE-639, CAPEC-1, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 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=5.0.0 <5.3.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Roskus · Prospero Flow CRMversion=5.0.0 <5.3.6

Published CVSS scores

8.7Secur0 CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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
CAPEC-1Accessing Functionality Not Properly Constrained by ACLs
T1213Data from Information Repositories

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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