{"schemaVersion":3,"id":"CVE-2026-49859","aliases":["GHSA-cpgj-f7g3-2pp2"],"status":"published","duplicateOf":null,"title":null,"description":"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 that passes the hostname check yet resolves to a denied IP, bypassing the network restriction entirely. 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