No VulnCrest analysis published for this CVE yet. Below is the original CNA/NVD description, unmodified.
Description
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.
Exploits & detection
No public PoC or detection template found yet.
Timeline
- Published: 03 Nov 2026
- Last modified upstream: 07 Nov 2026
Sources & licenses
- CVE / CVSS / CWE
- NVD record ↗ (unmodified). This product uses the NVD API but is not endorsed or certified by the NVD. CVE® © The MITRE Corporation.
- Exploitation
- CISA KEV (CC0) · EPSS by FIRST.org
- References used for the analysis
- https://github.com/node-opcua/node-opcua/commit/0261e873900800983c622e01120f484dc6063698
- https://github.com/node-opcua/node-opcua/pull/1580
- https://github.com/node-opcua/node-opcua/releases/tag/v2.180.0
- https://github.com/node-opcua/node-opcua/security/advisories/GHSA-xggf-m53x-jc3f
- https://github.com/node-opcua/node-opcua/security/advisories/GHSA-xggf-m53x-jc3f
- Analysis, summary and remediation
- © VulnCrest