CVE-2026-54156highCWE-770

CVE-2026-54156: falha de alta gravidade em node-opcua

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

Publicada em

Seguir esta CVE+ Monitorar node-opcua+ Monitorar node-opcua

Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.

21Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 7.5epss 0.8%
node-opcua is an OPC UA implementation for TypeScript and Node.js. Prior to 2.166.0, the process-global g_alreadyUsedNonce cache used by nonceAlreadyBeenUsed in packages/node-opcua-secure-channel/source/server/server_secure_channel_layer.ts records nonces from OpenSecureChannelRequest and CreateSession without expiration or a size limit. An unauthenticated remote attacker can repeatedly create sessions with unique nonces, causing entries to persist after session expiry and accumulate across connection cycles even when maxSessions=10 limits concurrent sessions. The resulting unbounded heap growth can exhaust the default Node.js heap and crash the node-opcua server process. This issue is fixed in version 2.166.0.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Produtos afetados
node-opcua · node-opcua
CVEs relacionadas — node-opcua

No mesmo produto, das mais perigosas para as menos.

CVE-2026-95860CRITICALnode-opcua: Namespace-Level RBAC Fail-Open - Anonymous Write/Call Bypass via Unbound `DefaultRolePermissionsEPSS 0.6%CVE-2026-68904HIGHnode-opcua: TCP Socket Leak (FIN-WAIT-2) via keepalive reconnection cycle - Resource ExhaustionEPSS 0.4%CVE-2026-54155HIGHnode-opcua: Missing nonce verification in UserNameIdentityToken authenticationEPSS 0.4%CVE-2026-69200LOWnode-opcua: Prototype Pollution via internal `fieldsToJson()` implementation (Related to CVE-2024-57086)EPSS 0.3%