CVE-2026-62392 -- CVSS 9.8 Vulnerability Briefing

CVE-2026-62392 | CVSS 9.8 (Critical) | Exploit: No known exploit

What Is It

CVE-2026-62392 is a critical OS command injection vulnerability in Apache Kylin, an open-source OLAP analytics engine, where a backend API passes job configuration parameters directly to the operating system command line without adequate sanitization.

Technical Detail

The flaw arises from improper neutralization of special characters in job configuration parameters that are subsequently incorporated into OS-level command execution within Apache Kylin's backend API layer. An attacker who can supply or manipulate these job config parameters -- whether through an authenticated API call or, depending on access controls, an unauthenticated request -- can inject arbitrary OS commands that execute with the privileges of the Kylin server process. Successful exploitation results in remote code execution (RCE) on the underlying host, with potential for full system compromise, data exfiltration, or lateral movement within the network.

Exploitation Status

No known exploit code has been publicly observed or confirmed as of July 21, 2026. This vulnerability is not listed in CISA's Known Exploited Vulnerabilities catalog. Despite the absence of confirmed exploitation, the critical CVSS score of 9.8 and the straightforward nature of OS command injection flaws mean that weaponization risk should be treated as elevated.

Who Is Targeting This

No specific threat actor attribution at this time. Neither confirmed nor reported threat actor activity has been associated with this vulnerability as of the date of this briefing.

What To Do

Apply the vendor-issued patch from the Apache Kylin project immediately, prioritizing any internet-facing or network-accessible Kylin deployments. If patching cannot be completed immediately, restrict access to the affected backend API endpoints via network controls, firewall rules, or API gateway policies to limit exposure to trusted internal hosts only. Review Kylin service account privileges and apply the principle of least privilege to reduce the blast radius of any potential exploitation. Monitor application and OS-level logs for anomalous command execution patterns originating from the Kylin process, including unexpected child process spawning or outbound network connections initiated by the Kylin service user. Check the official Apache Kylin security advisories for specific version guidance and confirm the patched release version before deploying.