Platform
java
Component
talend-jobserver
Fixed in
7.3.1-R2026-01
8.0.1.R2026-01-RT
CVE-2026-6264 is a critical remote code execution (RCE) vulnerability affecting Talend JobServer versions 7.3.0–TPS-6018. An unauthenticated attacker can exploit this flaw via the JMX monitoring port to execute arbitrary code on the affected system. While requiring TLS client authentication offers partial mitigation, applying the patch TPS-6018 is essential for complete resolution.
The impact of CVE-2026-6264 is severe. Successful exploitation allows an attacker to execute arbitrary code on the Talend JobServer with no authentication required. This grants the attacker complete control over the server, enabling them to steal sensitive data, modify configurations, install malware, or pivot to other systems within the network. The JMX monitoring port is often exposed, increasing the attack surface. This vulnerability shares similarities with other JMX-related RCE vulnerabilities where improper access controls lead to unauthorized code execution.
CVE-2026-6264 was publicly disclosed on 2026-04-14. The vulnerability's criticality (CVSS 9.8) and ease of exploitation (unauthenticated RCE) suggest a high probability of exploitation. No public proof-of-concept (POC) code has been released as of this writing, but the lack of authentication makes it likely that one will emerge. It is not currently listed on the CISA KEV catalog.
Exploit Status
EPSS
0.28% (52% percentile)
CISA SSVC
CVSS Vector
To mitigate CVE-2026-6264, prioritize applying the official patch TPS-6018. If immediate patching is not feasible, implement a temporary workaround by requiring TLS client authentication for the JMX monitoring port. This adds a layer of security, but does not fully address the vulnerability. For Talend ESB Runtime, the JMX monitoring port is disabled by default from the R2024-07-RT patch; verify this setting. After applying the patch or implementing the TLS client authentication, confirm the mitigation by attempting to access the JMX monitoring port without proper credentials; access should be denied.
To mitigate the vulnerability, it is recommended to apply the latest security update (TPS-6017 or TPS-6018 depending on the version) or, alternatively, enable TLS client authentication on the JMX monitoring port. For Talend ESB Runtime, disabling the JobServer JMX monitoring port is a solution.
Vulnerability analysis and critical alerts directly to your inbox.
CVE-2026-6264 is a critical remote code execution vulnerability in Talend JobServer versions 7.3.0–TPS-6018, allowing attackers to execute code without authentication via the JMX monitoring port.
If you are using Talend JobServer versions 7.3.0–TPS-6018 and have not applied the TPS-6018 patch, you are potentially affected by this vulnerability.
Apply the official patch TPS-6018. As a temporary workaround, require TLS client authentication for the JMX monitoring port.
While no active exploitation has been confirmed, the vulnerability's criticality and ease of exploitation suggest a high probability of future exploitation.
Refer to the official Talend security advisory for CVE-2026-6264 on the Talend website (link to advisory would be here if available).
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