{"schemaVersion":3,"id":"CVE-2026-22864","aliases":["GHSA-m3c4-prhw-mrx6"],"status":"published","duplicateOf":null,"title":null,"description":"Deno is a JavaScript, TypeScript, and WebAssembly runtime. Before 2.5.6, a prior patch aimed to block spawning Windows batch/shell files by returning an error when a spawned path’s extension matched .bat or .cmd. That check performs a case-sensitive comparison against lowercase literals and therefore can be bypassed when the extension uses alternate casing (for example .BAT, .Bat, etc.). 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