{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-59234","assignerOrgId":"4daa8cea-433a-44bd-9456-53b127fc289a","state":"PUBLISHED","assignerShortName":"Secur0","dateReserved":"2026-07-03T11:24:39.241Z","datePublished":"2026-07-03T12:47:38.445Z","dateUpdated":"2026-07-06T15:57:11.131Z"},"containers":{"cna":{"providerMetadata":{"orgId":"4daa8cea-433a-44bd-9456-53b127fc289a","shortName":"Secur0","dateUpdated":"2026-07-03T12:47:38.445Z"},"title":"Authorization Bypass Through User-Controlled Key in Prospero Flow CRM calendar event deletion","datePublic":"2026-07-02T22:00:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-639","description":"CWE-639 Authorization Bypass Through User-Controlled Key","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-77","descriptions":[{"lang":"en","value":"CAPEC-77 Manipulating User-Controlled Variables"}]}],"affected":[{"vendor":"Roskus","product":"Prospero Flow CRM","collectionURL":"https://github.com/Roskus/prospero-flow-crm","repo":"https://github.com/Roskus/prospero-flow-crm","programFiles":["app/Http/Controllers/Calendar/CalendarDeleteEventController.php"],"versions":[{"status":"affected","version":"1.0.0","lessThan":"5.5.3","versionType":"semver"}],"defaultStatus":"unaffected","cpes":["cpe:2.3:a:roskus:prospero_flow_crm:*:*:*:*:*:*:*:*"]}],"cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:roskus:prospero_flow_crm:*:*:*:*:*:*:*:*","versionStartIncluding":"1.0.0","versionEndExcluding":"5.5.3"}]}]}],"descriptions":[{"lang":"en","value":"Authorization Bypass Through User-Controlled Key (CWE-639) in CalendarDeleteEventController (app/Http/Controllers/Calendar/CalendarDeleteEventController.php), exposed at GET /calendar/event/delete/{id}, in Prospero Flow CRM before 5.5.3 allows a remote, authenticated attacker to delete arbitrary calendar events belonging to other users by manipulating the {id} path parameter, because the delete handler resolves the record with Calendar::find($id)->delete() and performs no ownership check (no user_id/company_id scoping) before deletion. This results in unauthorized destruction of other users' calendar events across the platform.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Authorization Bypass Through User-Controlled Key (CWE-639) in CalendarDeleteEventController (app/Http/Controllers/Calendar/CalendarDeleteEventController.php), exposed at GET /calendar/event/delete/{id}, in Prospero Flow CRM before 5.5.3 allows a remote, authenticated attacker to delete arbitrary calendar events belonging to other users by manipulating the {id} path parameter, because the delete handler resolves the record with Calendar::find($id)-&gt;delete() and performs no ownership check (no user_id/company_id scoping) before deletion. This results in unauthorized destruction of other users' calendar events across the platform.</p>"}]}],"tags":["x_open-source"],"references":[{"url":"https://github.com/Roskus/prospero-flow-crm/commit/8c26eed4d80544c30e55448e12a8e999af6d2b70","name":"Fix commit 8c26eed4 - add user_id ownership check before delete","tags":["patch"]},{"url":"https://github.com/Roskus/prospero-flow-crm/releases/tag/v5.5.3","name":"Release v5.5.3 (fixed version)","tags":["release-notes"]},{"url":"https://secur0.com/en/cna/cve-list/cve-2026-59234-idor-in-prospero-flow-crm-allows-deletion-of-other-users-calendar-events","tags":["related"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":6.9,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"}}],"solutions":[{"lang":"en","value":"Upgrade to version 5.5.3 or higher.","supportingMedia":[{"type":"text/html","base64":false,"value":"Upgrade to version 5.5.3 or higher."}]}],"credits":[{"lang":"en","value":"Robert Mihaila","type":"finder"},{"lang":"en","value":"Amirreza Fadaeizadeh Bidari","type":"finder"},{"lang":"en","value":"Xoan M. Otero Jorge","type":"analyst"},{"lang":"en","value":"Secur0 CNA","type":"coordinator"},{"lang":"en","value":"Gustavo Novaro","type":"remediation developer"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-06T15:57:03.621583Z","id":"CVE-2026-59234","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-06T15:57:11.131Z"}}]}}