CVE-2020-7662

HIGH Year: 2020
CVSS v3 Score
7.5
High
CVSS v2 Score
5.0
Medium
Weakness Type
NVD-CWE-Other
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Vulnerability Description

websocket-extensions npm module prior to 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 attacker to conduct Regex Denial Of Service (ReDoS) on a single-threaded server by providing a malicious payload with the Sec-WebSocket-Extensions header.

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