websocket-extensions npm module before 0.1.4 allows Denial of Service (DoS) via Regex Backtracking. The extension parser may take quadratic time when parsing a header containing an unclosed string parameter value whose content is a repeating two-byte sequence of a backslash and some other character. This could be abused by an malicious user to conduct Regex Denial Of Service (ReDoS) on a single-threaded server by providing a malicious payload with the Sec-WebSocket-Extensions header.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
websocket-extensions project websocket-extensions |
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