high7.3
CVE-2026-49401
Deno: Permission Bypass via Unicode Normalization Mismatch on macOS (APFS)
Impact
Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.7.14, Deno's permission system enforces filesystem and execution restrictions by comparing the requested path against the path supplied to --deny-read, --deny-write, --deny-run, or --deny-ffi. On macOS, that comparison was done at the raw-byte level while the APFS filesystem treats different Unicode spellings of the same name as the same file. That means a program could reach a denied path by spelling it differently than the deny rule. This vulnerability is fixed in 2.7.14.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| rust | deno | <= 2.7.13 | 2.7.14 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Deno | Deno | before 2.7.14 |