gchq/CyberChef

Bug report: 'JSON beautify' operation losing numeric precision

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#415 opened on Nov 20, 2018

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Description

Summary

When running the 'JSON beautify' operation, numeric precision is lost for large numbers.

Example

https://gchq.github.io/CyberChef/#recipe=JSON_Beautify('%5C%5Ct')&input=eyAiYSI6IDEyMzQ1Njc4OTAxMjM0NTY3ODkgfQ

Input:

{ "a": 1234567890123456789 }

Erroneous output:

{
	"a": 1234567890123456800
}

Contributor guide

Research direction
Investigate the JSON Beautify operation in CyberChef to identify where numeric precision is lost. The issue is likely due to JavaScript's handling of large numbers as floating point. Consider using a library like json bigint or parsing numbers as strings.
Tech stack
javascript
Domain
data
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitJavaScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75