RCE in Node-Opcua
CVE-2026-95860
node-opcua is an OPC UA implementation for TypeScript and Node.js. From 2.42.0 until 2.180.0, namespace-level access control configured through setDefaultRolePermissions is not honored by the runtime enforcement path for nodes without explicit per-node RolePermissions. SessionContext.getApplicableRolePermissions reads a missing or null DefaultRolePermissions metadata value instead of the configured namespace field, and the null result is treated permissively. An anonymous network client can consequently write variables with CurrentWrite access or call bound methods when an operator configured a restrictive namespace default and relied on inheritance. Servers with no declared policy, nodes with explicit per-node permissions, and correctly bound programmatic namespace metadata are outside the authorization-bypass case. This issue is fixed in version 2.180.0.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Node-Opcua — versions >= 2.42.0, < 2.180.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-95860?
- CVE-2026-95860 is a critical-severity vulnerability in Node-Opcua, classified under Improper Authorization. CVSS score: 9.1/10. Published 2026-11-03.
- How severe is CVE-2026-95860?
- Critical severity. CVSS v3 base score is 9.1 out of 10.