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CVE-2026-68904

7.0 · HIGH

node-opcua is an OPC UA implementation for TypeScript and Node.js.

Published Sep 16, 2026CWE-400EPSS 0.44%

Overview

CVE-2026-68904 is a high-severity vulnerability. It was published on September 16, 2026 and has a CVSS 3.1 base score of 7.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

node-opcua is an OPC UA implementation for TypeScript and Node.js. From 2.0.0 until 2.170.0, node-opcua clients using the default keepSessionAlive setting can enter a repeated reconnection cycle when an OPC UA server's clock skew causes BadInvalidTimestamp responses. ClientSessionKeepAliveManager._ping_server treated the server-originated ServiceFault as a network outage and forced a transport reconnect, while ClientTCP_transport._on_ACK_response used socket.end() after failed HEL/ACK negotiation and could leave the connection in FIN-WAIT-2 when the peer did not close. Repetition at the keepAliveInterval accumulates file descriptors and memory until the client process or container can be terminated by resource exhaustion. This issue is fixed in version 2.170.0.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/node-opcua/node-opcua/commit/1959cbb8946b386d2e24a1cce05b7148099d36e7GitHubgithub.com/node-opcua/node-opcua/commit/481664fa6ba8204737c5a92797ff68c3ae780c1cGitHubgithub.com/node-opcua/node-opcua/commit/4d59197e2dbd82791d7f36dad7da178715e0c27aGitHubgithub.com/node-opcua/node-opcua/commit/dc406fd2d364aa69dd173be21ed32a7ff425017aGitHubgithub.com/node-opcua/node-opcua/pull/1497GitHubgithub.com/node-opcua/node-opcua/releases/tag/v2.170.0GitHubgithub.com/node-opcua/node-opcua/security/advisories/GHSA-r2pf-9cw4-5j65

How CyberStrike helps

Frequently asked questions

What is CVE-2026-68904?

CVE-2026-68904 is a high-severity vulnerability. It was published on September 16, 2026 and has a CVSS 3.1 base score of 7.0 (HIGH).

How severe is CVE-2026-68904?

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-68904?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-68904?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-68904 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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