undici vulnerable to Denial of Service via unrequested WebSocket subprotocol
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| undici | undici | unaffected |
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Configuration 1 [-]
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No data.
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| Undici | Undici |
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| Source | ID | Title |
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Github GHSA |
GHSA-rfgv-xxqx-mfg5 | undici vulnerable to Denial of Service via unrequested WebSocket subprotocol |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.394% probability within 30 days)
| Type | Values Removed | Values Added |
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| First Time appeared |
Nodejs
Nodejs undici |
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| CPEs | cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:* | |
| Vendors & Products |
Nodejs
Nodejs undici |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| Weaknesses | CWE-476 | |
| References |
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| Metrics |
threat_severity
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threat_severity
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| Type | Values Removed | Values Added |
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| First Time appeared |
Undici
Undici undici |
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| Vendors & Products |
Undici
Undici undici |
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| Description | 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, undici dereferences a null value while checking it against the requested list and throws an uncaught TypeError. Because that code runs inside a microtask with no surrounding error handling, the exception propagates and terminates the process under Node's default behavior, instead of gracefully failing the connection as required by the WebSocket protocol. Any application that opens a WebSocket to an attacker-controlled or compromised server, or over a plaintext connection subject to a machine-in-the-middle, can be crashed remotely without authentication in the default configuration. This affects undici versions from 6.7.0 up to 6.28.1, from 7.0.0 up to 7.29.1, and from 8.0.0 up to 8.10.2. Users should upgrade to undici 6.28.1, 7.29.1, or 8.10.2. | |
| Title | undici vulnerable to Denial of Service via unrequested WebSocket subprotocol | |
| Weaknesses | CWE-248 CWE-252 |
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| References |
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| Metrics |
cvssV3_1
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