Uncaught Exception Affecting devalue package, versions >=5.8.0 <5.9.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-DEVALUE-20416740
- published4 Oct 2026
- disclosed1 Oct 2026
- creditUnknown
Introduced: 1 Oct 2026
CVE-2026-123562 (opens in a new tab)How to fix?
Upgrade devalue to version 5.9.3 or higher.
Overview
devalue is a JSON.stringify, but handles cyclical references, repeated references, undefined, regular expressions, dates, Map and Set.
Affected versions of this package are vulnerable to Uncaught Exception via unhandled Promise rejections in stringifyAsync within src/stringify.js. When a Promise passed to stringifyAsync rejects before it is awaited in the sequential traversal loop, the rejection goes unhandled, causing an UnhandledPromiseRejection event that crashes the Node.js process.