CVE-2026-6264

Talend · JobServer and Runtime

A critical remote code execution vulnerability exists in Talend JobServer and Talend Runtime via the JMX monitoring port.

Executive summary

Unauthenticated remote code execution in Talend JobServer and Talend Runtime poses a critical threat to system integrity and infrastructure control.

Vulnerability

The vulnerability allows unauthenticated remote code execution by leveraging the JMX monitoring port. Attackers can exploit this interface to execute arbitrary commands on the affected systems.

Business impact

The CVSS score of 9.8 reflects the extreme severity of this flaw, which provides an attacker with complete control over the affected infrastructure. Successful exploitation could lead to full system compromise, data exfiltration, and significant operational disruption. Given the potential for lateral movement, this vulnerability represents an immediate risk to the confidentiality, integrity, and availability of business-critical data.

Remediation

Immediate Action: Apply the vendor-supplied security patch immediately to address the underlying vulnerability. For Talend ESB Runtime, ensure the JobServer JMX monitoring port is explicitly disabled if the R2024-07-RT patch or later is not yet deployed.

Proactive Monitoring: Review system and JMX access logs for unauthorized connections or unusual command patterns originating from the JMX port.

Compensating Controls: Restrict network access to the JMX monitoring port via firewall rules and implement TLS client authentication for the monitoring port where possible.

Exploitation status

Public Exploit Available: No

Analyst recommendation

This vulnerability is highly critical due to its unauthenticated remote execution capability. Organizations must prioritize applying vendor patches and hardening the JMX interface to prevent unauthorized access. Failure to remediate could result in a complete breach of the affected Talend environment.