{"cve":"CVE-2026-77759","nvd":{"published":"2026-08-21T12:16:36.533","modified":"2026-10-15T19:10:00.173","status":"Deferred","description":"Authorization Bypass Through User-Controlled Key in the transaction API in Roskus Prospero\nFlow CRM 5.0.0 through 5.3.5 allows an authenticated user to read the transactions of other\ncompanies on the same instance via an incremented identifier in GET /api/transaction/{id},\nwhich is resolved without company scoping and without any permission check.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":8.7},"cvss_v3":null,"cwes":["CWE-639"],"references":["https://github.com/Roskus/prospero-flow-crm/commit/980c35ac00e419591a8adc2d1dbcc120ea62e273","https://github.com/Roskus/prospero-flow-crm/releases/tag/v5.5.3","https://secur0.com/en/cna/cve-list/cve-2026-77759-idor-missing-authz-prospero-transaction-api"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:38.260478770+00:00"},"epss":{"cve":"CVE-2026-77759","score":0.00509,"percentile":0.43185,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}