CVE-2026-49859

CVE-2026-49859 affects Deno before version 2.8.1. The bug occurs in fetch() where Deno checked the destination hostname against --deny-net rules but did not re-check the IP addresses that the hostname resolves to, allowing an attacker-controlled domain that passes the hostname check to resolve to...

SUSE CVE-2026-49859

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.1, when fetch was called, Deno checked the destination hostname against --deny-net rules but did not re-check the IP addresses that hostname resolved to. An attacker-controlled script could use a specially crafted domain name...