{"action":"Upgrade deno to 2.8.1 or later.","affected":[{"fixed":"2.8.1","introduced":"0"}],"component":"deno","cve_ids":["CVE-2026-49860"],"ecosystem":"crates.io","exploited":false,"fixed_versions":["2.8.1"],"ghsa_id":"GHSA-83pc-3rw9-qpwj","id":"tcs_01M5KEVJA4MT0TA5DWS9XB48JG","modified_at":"2026-07-20T21:15:27.253627173Z","published_at":"2026-06-16T19:04:07Z","references":["https://osv.dev/vulnerability/GHSA-83pc-3rw9-qpwj","https://github.com/denoland/deno/security/advisories/GHSA-83pc-3rw9-qpwj","https://nvd.nist.gov/vuln/detail/CVE-2026-49860","https://github.com/denoland/deno"],"severity":{"label":"medium","score":5.2},"sources":[{"source":"osv","source_id":"GHSA-83pc-3rw9-qpwj","url":"https://osv.dev/vulnerability/GHSA-83pc-3rw9-qpwj"}],"summary":"Deno: WebSocket API sandbox bypass via missing post-DNS check"}