qs : qs.stringify with arrayFormat 'comma' throws an uncaught TypeError on array elements carrying a non-callable own toString (DoS)

影響: npm:qs >= 6.7.0, <= 6.16.0 → 6.16.1

qs.stringify(obj, { arrayFormat: 'comma' }) throws an uncaught TypeError: Cannot convert object to primitive value when an array in obj contains an element that carries an own, non-callable toString property (for example { a: [ { toString: 'x' } ] }). A remote, unauthenticated attacker who can influence an object that the application later re-serializes with the comma array format triggers the throw. In a service that lacks a synchronous error boundary around the serialization call, the uncaugh…

Read on GitHub Advisory Database

On 10/28/2026, 01:10 AM, GitHub Advisory Database published "qs : qs.stringify with arrayFormat 'comma' throws an uncaught TypeError on array elements carrying a non-callable own toString (DoS)" (type: Advisory). Severity is "Medium" (medium). Related technologies: JavaScript / Node.js. CVE: CVE-2026-110816.