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String-Duplication project artwork

CurseForge · Minecraft mod

String-Duplication

Reintroduced the fixed string duper bug

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which String-Duplication release matches 26.2 Fabric?

Updated 6 days ago
Best match for your filters String Duplication 1.0.0 Minecraft 26.2
Game version 26.2
Loader Fabric

String-Duplication String Duplication 1.0.0 Minecraft 26.2 targets 26.2 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.

Where it goes

Is String-Duplication required on the client, server, or both?

The project page does not say whether this file belongs on the client, dedicated server, or both.

Client Source doesn’t say
Dedicated server Source doesn’t say
Loader for this release Fabric
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

Understand client and server requirements Read the Minecraft installation guide

What else does String-Duplication String Duplication 1.0.0 Minecraft 26.2 need?

String Duplication 1.0.0 Minecraft 26.2 on 26.2 Fabric. Every mod below is checked against that same setup.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

This file does not list any required or optional mods.

Before you install it

Add String-Duplication without breaking your instance.

Built for String-Duplication String Duplication 1.0.0 Minecraft 26.2 on 26.2 Fabric. Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use String Duplication 1.0.0 Minecraft 26.2. It targets 26.2 with Fabric; another release may have different loader, side or dependency requirements.

  2. 02

    Bring the mods it needs

    This file does not list any required mods. Do not add a library just because a different file uses it.

  3. 03

    Put it on the correct side

    The project page does not say whether this file belongs on the client, dedicated server, or both.

  4. 04

    Pick the file you checked

    Use the “Get this file” button beside String Duplication 1.0.0 Minecraft 26.2. It opens that exact file at the source.

About this project

What does String-Duplication add?

String Duper Restorer

还原 1.21.2+ 被修复的经典刷线机漏洞

English Description

Introduction

This mod reintroduces the string duplication exploit that Mojang patched in Minecraft 1.21.10 and above.

The string duper is a classic exploit that has existed since Java 1.8, allowing players to duplicate String using Tripwire Hooks and water mechanics. It has been widely used by the technical community for:

  • Obtaining massive amounts of string to craft wool as a renewable fuel source.
  • Trading with villagers for emeralds, which can then be exchanged for diamond gear and other valuable items.
  • Quickly accumulating resources in skyblock, hardcore survival, or limited-resource maps.

Note: This mod is only compatible with Minecraft Java Edition 1.21.10+ and requires Fabric. It does not work on vanilla servers unless the mod is installed on the server side as well.

Features

  • Restores the duplication behavior of tripwire hooks and water that was removed by Mojang (patches MC-59471 and MC-129055).
  • Does exactly one thing – no extra features, no bloat.
  • Works in single-player and on servers (server‑side installation is enough for all players).

Supported Versions

  • Minecraft 1.21.10, 1.21.11, 26.1, and any later 26.x releases.
  • Mod Loader: Fabric (API required).

Installation

  1. Download the mod jar file for your Minecraft version.
  2. Place it in your .minecraft/mods folder (or the mods folder on your server).
  3. Launch the game or server – the string duper will work just like it did before 1.21.2.

Related Bugs

Bug ID Description
MC-59471 Main duplication exploit using tripwire hooks.
MC-129055 Related inconsistency in tripwire hook states.

Both were fixed in 1.21.2+; this mod reverts those fixes.

License

This mod is licensed under the MIT License – you are free to use, modify, and distribute it, as long as you retain the copyright notice.

Disclaimer

This mod is not affiliated with Mojang Studios. Use it at your own risk. The author is not responsible for any world corruption, server crashes, or other issues caused by this mod.

Project description from CurseForge.

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