EUVD-2026-57757

@fastify/busboy vulnerable to Denial of Service via prototype-named multipart part header...

GHSA-2GC4-CQFQ-P2GV Socket.IO: Engine.IO Protocol Revision Mismatch DoS

Impact A denial-of-service vulnerability exists in Engine.IO / Socket.IO servers that allow transport upgrades. The Engine.IO protocol revision is negotiated during the initial handshake and stored on the session, but a newly-created transport, including a WebSocket upgrade transport, could...

PT-2026-102976

Name of the Vulnerable Software and Affected Versions Engine.IO versions 6.6.0 through 6.6.9 Description A denial-of-service issue exists in servers that allow transport upgrades. During a transport upgrade, the server may independently derive an Engine.IO protocol revision from the upgrade reque...

NPM: request-filtering-agent: Synchronous throw from createConnection() for literal private-IP hosts bypasses req.on('error'), crashing the Node.js process

NPM: request-filtering-agent: Synchronous throw from createConnection for literal private-IP hosts bypasses req.on'error', crashing the Node.js process vulnerability discovered by ? in WordPress Npm request-filtering-agent versions 3.2.1...

GHSA-WC9G-MQFW-JRWM multer vulnerable to Denial of Service via crafted multipart field names

Impact A vulnerability in multer allows a remote, unauthenticated attacker to crash the Node.js process with a single multipart/form-data request. Two specially crafted text field names cause an uncaught RangeError: Invalid array length inside multer's field parsing, which is not routed to the...

CVE-2026-19534

A flaw was found in undici. A remote attacker can exploit this vulnerability by responding with an unrequested WebSocket subprotocol during the opening handshake. This causes the undici WebSocket client to crash the entire Node.js process, leading to a denial of service DoS. Mitigation Mitigation...

CVE-2026-19534 undici vulnerable to Denial of Service via unrequested WebSocket subprotocol

undici's WebSocket client crashes the whole Node.js process during the opening handshake when a server responds with a subprotocol that the client never requested. A default WebSocket connection sends no subprotocol, but if the server's 101 response includes a Sec-WebSocket-Protocol header, undic...

CVE-2025-23166

The C++ method SignTraits::DeriveBits may incorrectly call ThrowException based on user-supplied inputs when executing in a background thread, crashing the Node.js process. Such cryptographic operations are commonly applied to untrusted inputs. Thus, this mechanism potentially allows an adversary...

CVE-2023-31125 Uncaught exception in engine.io

Engine.IO is the implementation of transport-based cross-browser/cross-device bi-directional communication layer for Socket.IO. An uncaught exception vulnerability was introduced in version 5.1.0 and included in version 4.1.0 of the socket.io parent package. Older versions are not impacted. A...

CVE-2021-39157

detect-character-encoding is an open source character encoding inspection library. In detect-character-encoding v0.6.0 and earlier, data matching no charset causes the Node.js process to crash. The problem has been patched in detect-character-encoding v0.7.0. No workaround are available and all...

CVE-2021-39157 Improper Handling of Exceptional Conditions in detect-character-encoding

detect-character-encoding is an open source character encoding inspection library. In detect-character-encoding v0.6.0 and earlier, data matching no charset causes the Node.js process to crash. The problem has been patched in detect-character-encoding v0.7.0. No workaround are available and all...

Improper Handling of Unexpected Data Type in ced

Impact In ced v0.1.0, passing data types other than Buffer causes the Node.js process to crash. Patches The problem has been patched in ced v1.0.0. You can upgrade from v0.1.0 without any breaking changes. Workarounds Before passing an argument to ced, verify it’s a Buffer using Buffer.isBufferob...

GHSA-27WQ-QX3Q-FXM9 Improper Handling of Unexpected Data Type in ced

Impact In ced v0.1.0, passing data types other than Buffer causes the Node.js process to crash. Patches The problem has been patched in ced v1.0.0. You can upgrade from v0.1.0 without any breaking changes. Workarounds Before passing an argument to ced, verify it’s a Buffer using Buffer.isBufferob...