{"action":"Upgrade deno to 2.8.1 or later.","affected":[{"fixed":"2.8.1","introduced":"0"}],"component":"deno","cve_ids":["CVE-2026-49859"],"ecosystem":"crates.io","exploited":false,"fixed_versions":["2.8.1"],"ghsa_id":"GHSA-cpgj-f7g3-2pp2","id":"tcs_01M5KEWZ8DK0FF3HE4WGAVMJYJ","modified_at":"2026-07-20T21:15:27.259698816Z","published_at":"2026-06-16T19:02:55Z","references":["https://osv.dev/vulnerability/GHSA-cpgj-f7g3-2pp2","https://github.com/denoland/deno/security/advisories/GHSA-cpgj-f7g3-2pp2","https://nvd.nist.gov/vuln/detail/CVE-2026-49859","https://github.com/denoland/deno"],"severity":{"label":"medium","score":5.2},"sources":[{"source":"osv","source_id":"GHSA-cpgj-f7g3-2pp2","url":"https://osv.dev/vulnerability/GHSA-cpgj-f7g3-2pp2"}],"summary":"Deno: `fetch()` API sandbox bypass via missing DNS resolution check"}