CVE-2026-59240

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/Roskus/prospero-flow-crm/commit/eaee2ae018701d116164976cbfa37fa9294ab4cc
https://github.com/Roskus/prospero-flow-crm/releases/tag/v5.5.3
https://secur0.com/en/cna/cve-list/cve-2026-59240-idor-in-prospero-flow-crm-allows-deletion-of-other-users-notifications

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-27 22:17

Updated : 2026-09-01 20:52

NVD link : CVE-2026-59240

Mitre link : CVE-2026-59240

CVE.ORG link : CVE-2026-59240

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

{"id": "CVE-2026-59240", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-59240", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-28T14:19:12.811494Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "4daa8cea-433a-44bd-9456-53b127fc289a", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.9, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "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/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "LOW", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "4daa8cea-433a-44bd-9456-53b127fc289a", "affectedData": [{"repo": "https://github.com/Roskus/prospero-flow-crm", "vendor": "Roskus", "product": "Prospero Flow CRM", "versions": [{"status": "affected", "version": "1.0.0", "lessThan": "5.5.1", "versionType": "semver"}], "programFiles": ["app/Http/Controllers/Notification/DeleteNotificationController.php"], "collectionURL": "https://github.com/Roskus/prospero-flow-crm", "defaultStatus": "unaffected"}]}], "published": "2026-07-27T22:17:54.713", "references": [{"url": "https://github.com/Roskus/prospero-flow-crm/commit/eaee2ae018701d116164976cbfa37fa9294ab4cc", "source": "4daa8cea-433a-44bd-9456-53b127fc289a"}, {"url": "https://github.com/Roskus/prospero-flow-crm/releases/tag/v5.5.3", "source": "4daa8cea-433a-44bd-9456-53b127fc289a"}, {"url": "https://secur0.com/en/cna/cve-list/cve-2026-59240-idor-in-prospero-flow-crm-allows-deletion-of-other-users-notifications", "source": "4daa8cea-433a-44bd-9456-53b127fc289a"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "4daa8cea-433a-44bd-9456-53b127fc289a", "description": [{"lang": "en", "value": "CWE-639"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-09-01T20:52:27.110", "sourceIdentifier": "4daa8cea-433a-44bd-9456-53b127fc289a"}