IDOR in Prospero Flow CRM allows cross-tenant ticket read, hijacking, and deletion

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-19539
StatePUBLISHED
AssignerSecur0
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-11 14:17:13 UTC
Updated2026-08-12 19:17:32 UTC
DescriptionAuthorization Bypass Through User-Controlled Key in the ticket management component in Roskus Prospero Flow CRM before 5.4.9 allows authenticated users of any company to read the full content (title, description, and attachments) of tickets belonging to another company, to hijack another company's tickets by reassigning their company_id, and to delete another company's tickets without any authorization check, via the ticket's numeric identifier, because the read and save operations retrieve the record without constraining the query to the authenticated user's company, and the delete controller type-hints a generic Illuminate\Http\Request instead of the TicketDeleteRequest that would enforce the required permission.

Risk And Classification

Primary CVSS: v4.0 8.6 HIGH from 4daa8cea-433a-44bd-9456-53b127fc289a

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.003220000 probability, percentile 0.247750000 (date 2026-08-12)

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
4.04daa8cea-433a-44bd-9456-53b127fc289aSecondary8.6HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/C...
4.0CNACVSS8.6HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
None
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Roskus Prospero Flow CRM affected 5.4.9 semver Not specified

References

ReferenceSourceLinkTags
github.com/Roskus/prospero-flow-crm/releases/tag/v5.5.3 4daa8cea-433a-44bd-9456-53b127fc289a github.com
github.com/Roskus/prospero-flow-crm/commit/b2b6ffdace0972ab62d1f7e8cdab0... 4daa8cea-433a-44bd-9456-53b127fc289a github.com
secur0.com/en/cna/cve-list/cve-2026-19539-idor-in-prospero-flow-crm-allo... 4daa8cea-433a-44bd-9456-53b127fc289a secur0.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Darío Rivas Quero (en)

CNA: Cristian Fernández Cornejo (en)

CNA: Xoán M. Otero Jorge (en)

CNA: Secur0 CNA (en)

CNA: Gustavo Novaro (en)

Additional Advisory Data

Solutions

CNA: Upgrade to version 5.4.9 or higher.

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