LOW 3.7 NVD

CVE-2026-69200

node-opcua is an OPC UA implementation for TypeScript and Node.js. Prior to node-opcua-client 2.145.0, the internal fieldsToJson method in packages/node-opcua-c

node-opcua is an OPC UA implementation for TypeScript and Node.js. Prior to node-opcua-client 2.145.0, the internal fieldsToJson method in packages/node-opcua-client/source/alarms_and_conditions/client_alarm.ts directly assigns unsanitized field names and allows a __proto__.pollutedKey path to modify Object.prototype. Successful exploitation requires an application to expose attacker-controlled event fields to fieldsToJson and may cause denial of service or application logic corruption. This vulnerability is fixed in 2.145.0.

References

https://github.com/node-opcua/node-opcua/security/advisories/GHSA-cv5q-7543-48q4

Published: 2026-09-16 · Source: NVD · Feed updated: 2026-09-16

This low severity vulnerability with a CVSS score of 3.7 was published on 2026-09-16 via NVD.

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