# node-opcua (npm) vulnerabilities

6 known vulnerabilities (6 high), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Weekly downloads: 97.2K
- Registry: https://www.npmjs.com/package/node-opcua

## Advisories (6)

### [CVE-2026-68904](https://cve.now/CVE-2026-68904): node-opcua: TCP Socket Leak (FIN-WAIT-2) via keepalive reconnection cycle - Resource Exhaustion

- Severity: High 7.0
- Published: Sep 16, 2026
- Affected: from 2.0.0, fixed in 2.170.0.

### [CVE-2026-54156](https://cve.now/CVE-2026-54156): node-opcua: Unbounded nonce cache enables unauthenticated heap exhaustion DoS

- Severity: High 7.5
- Published: Sep 14, 2026
- Affected: fixed in 2.166.0.

### [CVE-2026-54155](https://cve.now/CVE-2026-54155): node-opcua: Missing nonce verification in UserNameIdentityToken authentication

- Severity: High 7.7
- Published: Sep 14, 2026
- Affected: through 2.165.0.

### [CVE-2022-24375](https://cve.now/CVE-2022-24375): Denial of Service (DoS)

- Severity: High 7.5
- Published: Aug 24, 2022
- Affected: fixed in 2.74.0.

### [CVE-2022-21208](https://cve.now/CVE-2022-21208): Denial of Service (DoS)

- Severity: High 7.5
- Published: Aug 23, 2022
- Affected: fixed in 2.74.0.

### [CVE-2022-25231](https://cve.now/CVE-2022-25231): Denial of Service (DoS)

- Severity: High 7.5
- Published: Aug 23, 2022
- Affected: fixed in 2.74.0.

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