CVE-2026-68904

node-opcua is an OPC UA implementation for TypeScript and Node.js. From 2.0.0 until 2.170.0, node-opcua clients using the default keepSessionAlive setting can enter a repeated reconnection cycle when an OPC UA server's clock skew causes BadInvalidTimestamp responses...

NPM: node-opcua: TCP Socket Leak (FIN-WAIT-2) via keepalive reconnection cycle - Resource Exhaustion

Resource Exhaustion vulnerability discovered by ? in WordPress Npm node-opcua-transport versions = 2.0.0, 2.170.0...

NPM: node-opcua: TCP Socket Leak (FIN-WAIT-2) via keepalive reconnection cycle - Resource Exhaustion

Resource Exhaustion vulnerability discovered by ? in WordPress Npm node-opcua-client versions = 2.0.0, 2.170.0...

NPM: node-opcua: TCP Socket Leak (FIN-WAIT-2) via keepalive reconnection cycle - Resource Exhaustion

Resource Exhaustion vulnerability discovered by ? in WordPress Npm node-opcua versions = 2.0.0, 2.170.0...

node-opcua: TCP Socket Leak (FIN-WAIT-2) via keepalive reconnection cycle - Resource Exhaustion

SUMMARY ------- A combination of bugs in node-opcua causes unlimited TCP socket accumulation FIN-WAIT-2 state during automatic reconnection, leading to memory exhaustion and eventual container/process crash OOM kill. The issue is triggered by the default configuration keepSessionAlive: true when...

CVE-2026-68904

node-opcua (an OPC UA implementation for TypeScript/Node.js) versions 2.0.0 through 2.170.0 are affected by a TCP socket leak caused by a keepalive reconnection cycle. When an OPC UA server's clock skew produces BadInvalidTimestamp responses, ClientSessionKeepAliveManager._ping_server misclassifi...

EUVD-2026-80869

node-opcua is an OPC UA implementation for TypeScript and Node.js. From 2.0.0 until 2.170.0, node-opcua clients using the default keepSessionAlive setting can enter a repeated reconnection cycle when an OPC UA server's clock skew causes BadInvalidTimestamp responses...

CVE-2026-68904 node-opcua: TCP Socket Leak (FIN-WAIT-2) via keepalive reconnection cycle - Resource Exhaustion

node-opcua is an OPC UA implementation for TypeScript and Node.js. From 2.0.0 until 2.170.0, node-opcua clients using the default keepSessionAlive setting can enter a repeated reconnection cycle when an OPC UA server's clock skew causes BadInvalidTimestamp responses...

CVE-2026-69200

CVE-2026-69200 is a prototype pollution vulnerability in the node-opcua library (an OPC UA implementation for TypeScript/Node.js). The flaw exists in the internal fieldsToJson() method within packages/node-opcua-client/source/alarms_and_conditions/client_alarm.ts, which directly assigns unsanitiz...

EUVD-2026-80867

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/alarmsandconditions/clientalarm.ts directly assigns unsanitized field names and allows a proto.pollutedKey path to modify...

CVE-2026-54156 node-opcua: Unbounded nonce cache enables unauthenticated heap exhaustion DoS

node-opcua is an OPC UA implementation for TypeScript and Node.js. Prior to 2.166.0, the process-global galreadyUsedNonce cache used by nonceAlreadyBeenUsed in packages/node-opcua-secure-channel/source/server/serversecurechannellayer.ts records nonces from OpenSecureChannelRequest and CreateSessi...

CVE-2026-54156 node-opcua: Unbounded nonce cache enables unauthenticated heap exhaustion DoS

node-opcua is an OPC UA implementation for TypeScript and Node.js. Prior to 2.166.0, the process-global galreadyUsedNonce cache used by nonceAlreadyBeenUsed in packages/node-opcua-secure-channel/source/server/serversecurechannellayer.ts records nonces from OpenSecureChannelRequest and CreateSessi...

CVE-2026-54156

node-opcua (an OPC UA implementation for TypeScript/Node.js) versions >=2.1.9 through

CVE-2026-54155 node-opcua: Missing nonce verification in UserNameIdentityToken authentication

node-opcua is an OPC UA implementation for TypeScript and Node.js. Prior to 2.166.0, the UserNameIdentityToken authentication handler in packages/node-opcua-server/source/opcuaserver.ts decrypts an RSA-OAEP password blob but does not verify that the trailing bytes match the current session...

CVE-2026-54155

node-opcua (NPM, versions ≤ 2.165.0) contains a missing nonce verification in the UserNameIdentityToken authentication handler (packages/node-opcua-server/source/opcua_server.ts). After RSA-OAEP decryption of the password blob, the server never checks that trailing bytes match session.nonce. This...

CVE-2026-54155 node-opcua: Missing nonce verification in UserNameIdentityToken authentication

node-opcua is an OPC UA implementation for TypeScript and Node.js. Prior to 2.166.0, the UserNameIdentityToken authentication handler in packages/node-opcua-server/source/opcuaserver.ts decrypts an RSA-OAEP password blob but does not verify that the trailing bytes match the current session...

NPM: node-opcua: Unbounded nonce cache enables unauthenticated heap exhaustion DoS

NPM: node-opcua: Unbounded nonce cache enables unauthenticated heap exhaustion DoS vulnerability discovered by ? in WordPress Npm node-opcua versions 2.166.0...

node-opcua: Unbounded nonce cache enables unauthenticated heap exhaustion DoS

Summary A process-global nonce cache with no eviction policy allows an unauthenticated remote attacker to exhaust server heap memory by repeatedly opening sessions, causing the node-opcua server process to crash. Affected versions: = 2.165.0 Tested version: 2.165.0 CVSS Score: 7.5 High CVSS Vecto...

@cbsanal/node-red-opcua-browse-subscribe (>=0.0.1, <=0.0.4), @frangoteam/fuxa (>=1.1.7, <=1.3.1) +46 more potentially affected by CVE-2026-54156 via node-opcua (>=2.1.9, <=2.165.2)

node-opcua NPM version =2.1.9, =0.0.1, =1.1.7, =1.1.19, =1.3.2-alpha.86, =1.4.15-alpha.218, =1.4.15-alpha.66, =1.4.15-alpha.183, =1.4.15-alpha.61, =1.3.6-alpha.36, =1.4.15-alpha.159, =1.3.5, =1.4.15-alpha.197, =1.4.15-alpha.279, =1.4.15-alpha.182, =1.4.15-alpha.196 and more Source cves:...

GHSA-6WVW-VRW4-363W node-opcua: Unbounded nonce cache enables unauthenticated heap exhaustion DoS

Summary A process-global nonce cache with no eviction policy allows an unauthenticated remote attacker to exhaust server heap memory by repeatedly opening sessions, causing the node-opcua server process to crash. Affected versions: = 2.165.0 Tested version: 2.165.0 CVSS Score: 7.5 High CVSS Vecto...