toml-node: Quadratic-complexity DoS via many array-of-tables headers in toml.parse()

影響: npm:toml <= 5.0.0 → 5.0.1

toml.parse() is vulnerable to a quadratic-complexity (O(n²)) denial-of-service via many array-of-tables ([[name]]) headers. addTableArray() in lib/compiler.js rescans two entire bookkeeping Sets on every [[name]] header without pruning unrelated or distinct entries, so a document containing n such headers costs O(n²) compiler work. A ~321KB document of 20,000 distinct-named [[name]] blocks takes ~10.3 seconds to parse — a completely ordinary-looking TOML shape (a flat settings block plus one or…

Read on GitHub Advisory Database

On 10/23/2026, 01:38 AM, GitHub Advisory Database published "toml-node: Quadratic-complexity DoS via many array-of-tables headers in toml.parse()" (type: Advisory). Severity is "High" (high). Related technologies: JavaScript / Node.js. CVE: CVE-2026-114141.