CVE-2023-26103 Information

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 /ss/ used for splitting the Connection/Upgrade header. A specially crafted Connection/Upgrade header can be used to significantly slow down a web socket server.

Reference

https://github.com/denoland/deno/pull/17722 https://github.com/denoland/deno/blob/2b247be517d789a37e532849e2e40b724af0918f/ext/http/01_http.js%23L395-L409 https://github.com/denoland/deno/commit/cf06a7c7e672880e1b38598fe445e2c50b4a9d06 https://github.com/denoland/deno/releases/tag/v1.31.0 https://security.snyk.io/vuln/SNYK-RUST-DENO-3315970