GHSA-M3C4-PRHW-MRX6 Deno has an incomplete fix for command-injection prevention on Windows — case-insensitive extension bypass

Summary 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...