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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,9.2.0)"}}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "security-advisories", "source": "cna", "vendor": "kiteworks"}, "product": "security-advisories", "vendor": "kiteworks"}], "analysis": {"en": {"generated_at": "2026-04-16T15:17:22.690180+00:00", "value": {"mitigation_remediation": ["Upgrade Kiteworks to version 9.2.0 or later to apply the vendor fix.", "If upgrading is not immediately possible, restrict file upload capabilities to trusted users or disable the upload feature entirely until a patch can be applied.", "Implement stricter file type validation in the application\u2019s file handling settings to ensure only approved file types are accepted, following the CWE\u2011434 guidance on input validation."], "summary": {"action": "Patch", "impact": "Unrestricted upload of files leading to potential malicious content"}, "threat_synthesis": {"affected_systems": "Affected systems include Kiteworks, a private data network product, specifically versions earlier than 9.2.0 in the core file\u2011upload component. Administrators or users with elevated privileges can trigger the issue.", "description_and_impact": "This vulnerability in Kiteworks, prior to version 9.2.0, allows administrators to upload any file type without validation, enabling the placement of malicious or unauthorized files on the server. The lack of file\u2011type checks opens the possibility for attackers to introduce scripts or executables that could later be used for data exfiltration or further compromise if such files are accessed or executed on the system. The weakness is a classic uncontrolled file upload.", "risk_and_exploitability": "The CVSS score is 4.9, indicating a low to moderate impact, and the EPSS score of less than 1% signals that exploitation is unlikely to be widespread. The vulnerability is not listed in the CISA KEV catalog. Exploitation would require administrative privileges on the Kiteworks instance; it does not appear to be remotely exploitable by external parties."}}}}, "created": "2026-03-02T12:04:58.495512+00:00", "updated": "2026-04-16T15:30:06.211820+00:00", "vendors": ["kiteworks", "kiteworks$PRODUCT$security-advisories"]}