Detections
Analytics
CVE-2023-26103
high
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.
References
https://security.snyk.io/vuln/SNYK-RUST-DENO-3315970
https://github.com/denoland/deno/releases/tag/v1.31.0
https://github.com/denoland/deno/pull/17722
https://github.com/denoland/deno/commit/cf06a7c7e672880e1b38598fe445e2c50b4a9d06