CVE-2026-5750

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "5.30.07"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Fullstep", "source": "cna", "vendor": "Fullstep"}, "product": "fullstep", "vendor": "fullstep"}], "analysis": {"en": {"generated_at": "2026-04-22T19:21:45.536635+00:00", "value": {"mitigation_remediation": ["Upgrade Fullstep to version 5.30.07 or later; the patch removes the missing authorization checks on the vulnerable endpoints.", "If upgrading immediately is not feasible, block the vulnerable API paths and supplier\u2011registration URLs through a firewall or access\u2011control rule until the update is applied.", "Review other business functions for similar IDOR patterns, ensuring that every resource requiring ownership checks performs a proper access\u2011control validation as advised by CWE\u2011639."], "summary": {"action": "Apply Patch", "impact": "Unauthorized Data Access"}, "threat_synthesis": {"affected_systems": "The issue affects Fullstep\u2019s Fullstep product, specifically versions in the 5.x line. The vulnerability was fixed in version 5.30.07, which became available on January 29, 2026; all earlier 5.x releases remain affected.", "description_and_impact": "An insecure direct object reference vulnerability exists in the Fullstep registration flow. A logged\u2011in user can request data belonging to another user by manipulating the supplier ID in the API paths, enabling the retrieval or modification of that user\u2019s personal details and documents. The flaw arises from missing authorization checks for the /api/suppliers/v1/suppliers/ endpoint and the supplier\u2011registration page, allowing an attacker to view or alter another account\u2019s information. The weakness is a classic case of CWE\u2011639, where an application fails to enforce proper access\u2011control checks.", "risk_and_exploitability": "The vulnerability carries a CVSS score of 7.6, indicating a high severity potential for data compromise. Exploitation requires the attacker to authenticate to the application, which is likely most common in internal or compromised environments. No public exploits are reported and the vulnerability is not listed in CISA\u2019s KEV catalog, but the absence of EPSS data underscores that the exploitation probability is uncertain. Nonetheless, because the flaw grants an attacker access to sensitive user data, the risk warrants prompt remediation."}}}}, "created": "2026-04-22T19:30:24.747142+00:00", "updated": "2026-04-27T19:55:02.179339+00:00", "vendors": ["fullstep", "fullstep$PRODUCT$fullstep"]}