Security Advisory

CVE-2023-26103

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2023-02-25 05:00:01

Last updated 2025-03-11 15:31:01

Assigner snyk

State PUBLISHED

Description

Versions of the package deno before 1.31.0 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the upgradeWebSocket function, which contains regexes in the form of /s*,s*/, used for splitting the Connection/Upgrade header. A specially crafted Connection/Upgrade header can be used to significantly slow down a web socket server.

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