Deno Permission and Information Disclosure Bypass

Deno versions 2.2.0 through 2.2.4 contain an authorization bypass vulnerability in SQLite database handling that allows attackers to circumvent read/write database permission checks via the SQL `ATTACH DATABASE` statement. An unauthenticated remote attacker can exploit this with no user interaction to gain unauthorized read and write access to protected databases, achieving high confidentiality and integrity impact. Patch is available in Deno 2.2.5.

A security vulnerability in Deno (CVSS 5.3). Risk factors: public PoC available. Vendor patch is available.

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Starting in version 1.41.3 and prior to versions 2.1.13, 2.2.13, and 2.3.2, `deno run --allow-read --deny-read main.ts` results in allowed, even though 'deny' should be stronger. The result is the same with all global unary permissions given as `--allow-* --deny-*`. This only affects a nonsensical combination of flags, so there shouldn't be a real impact on the userbase. Users may upgrade to version 2.1.13, 2.2.13, or 2.3.2 to receive a patch.