deno/deno CVE-2026-49860: medium 5.2

WebSocket API sandbox bypass via missing post-DNS check

Action: Upgrade deno to 2.8.1 or later.

Affected

Fixed versions

Sources

• deno-runtime: GHSA-83pc-3rw9-qpwj
• https://www.cve.org/CVERecord?id=CVE-2026-49860

CVE-2026-49860 · published 2026-05-27T13:07:44Z · modified 2026-06-02T19:31:32Z · JSON