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Safely Handling Large Integers in JSON: Best Practices and Pitfalls

ID: 92c53de0-9a1f-5b1a-ba94-c2b0cbbb7cbf

STIX ID: report--92c53de0-9a1f-5b1a-ba94-c2b0cbbb7cbf

Feed Name: HackerOne Blog

Date Published: 2024-01-12

Date Updated: 2026-06-12

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### Executive Summary This article explains how JSON and JavaScript handle large integers, describes precision loss beyond 2^53 - 1, and recommends mitigation strategies such as serializing large integers as strings, using BigInt, or employing libraries like json-bigint to preserve numeric accuracy.

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