gchq/CyberChef

Bug(To Hexdump): Uncaugh range error when Width a large number

Closed

#2,483 opened on Jun 4, 2026

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 (0 comments) (0 reactions) (0 assignees)JavaScript (3,944 forks)batch import
buggood first issuehelp wanted

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Description

To reproduce, that drag TO HexDump operation and then set width to 155555555555555, and input H

as you can see an Uncaugh range error thrown

To Hexdump - RangeError in blob:https://gchq.github.io/18e6151c-44ea-4f09-a2f7-c48500cbca94 on line 2.<br><br>Message: repeat count must be less than infinity and not overflow maximum string size

Urls used for the Test:

Contributor guide

Research direction
Add input validation to limit the width parameter to a reasonable range.
Tech stack
javascript
Domain
frontend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
1
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80