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VULNERABILITIES

CVE-2026-69200 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:3.7 LOWVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/node-opcua/node-opcua/security/advisories/GHSA-cv5q-7543-48q4 CISA-ADP
https://github.com/node-opcua/node-opcua/security/advisories/GHSA-cv5q-7543-48q4 [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-69200
NVD Published Date:
Sep 16, 2026
NVD Last Modified:
Sep 24, 2026
Source:
[email protected]
CVE-2026-69200 Details - Not Deferred