CVE-2026-54156

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-2026-54156 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...

EUVD-2026-77624

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...

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...

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...

PT-2026-80741

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...

CVE-2026-12205 Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery

Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery. Crypt::DSA::sign caches the per-signature nonce material in the Key object without ever clearing it. The first sign on a Key object picks a nonce, and every later sign on that same object...