What does ExploitPreventer do?

ExploitPreventer is a client-side Minecraft Fabric mod that blocks three known server-side exploits: sign translation vulnerability, local HTTP requests via resource pack URLs, and device fingerprinting through the resource pack cache.

Is ExploitPreventer free?

Yes. ExploitPreventer is free and open-source under the MIT License.

Which Minecraft versions are supported?

Minecraft 1.21.11 and 26.1.x with Fabric Loader and Fabric API. Java 21 or newer is required.

Where can I download the official ExploitPreventer mod?

Only from this official website (exploitpreventer.ru) or the official GitHub repository. Avoid third-party reuploads — fake versions may contain malware.

Official Website

ExploitPreventer

The official Fabric mod that protects your Minecraft client from known server-side exploits.

Download GitHub

Fabric · Client-side · MIT License · Free & Open Source

What it protects against

Sign Translation Vulnerability

Servers can trick clients into resolving translation keys and sending the result back, leaking installed mods, keybinds, and language settings. ExploitPreventer blocks resolution on sign and anvil edit screens.

Local HTTP via Resource Pack

A crafted resource pack URL can force the client to hit local IPs (e.g. localhost:8080), revealing local services running on your machine. ExploitPreventer rejects resource pack URLs pointing to local addresses.

Device Fingerprinting

Servers abuse the resource pack cache to uniquely identify clients across sessions, even after username or IP changes. ExploitPreventer isolates the cache per account so packs cannot be correlated.

Downloads

Pick the build that matches your Minecraft version. All files are hosted directly on this official site.

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How to install

Install Fabric Loader for your Minecraft version.
Install Fabric API (required dependency).
Download the .jar above that matches your Minecraft version.
Drop the .jar into your mods folder:
- Windows: %APPDATA%\.minecraft\mods
- macOS: ~/Library/Application Support/minecraft/mods
- Linux: ~/.minecraft/mods
Launch Minecraft with the Fabric profile. That's it.

Requires Java 21+. The mod is client-side only — no server install needed.

Hall of Shame

Servers and plugins documented as actively using these exploits. Source: official HALL_OF_SHAME.md.

Servers

Address	Website	Exploits in use
cytooxien.net	cytooxien.net	Translation key, Fingerprinting, Local HTTP
mc.blockgame.info	blockgame.info	Translation key
minevn.net	minevn.net	Translation key
mcpvp.club	store.mcpvp.club	Translation key
donutsmp.net	store.donutsmp.net	Translation key
play.ccnetmc.com	ccnetmc.com	Translation key
netherite.gg	netherite.gg	Translation key
play.firemc.fun	firemc.fun	Translation key
applemc.fun	applemc.fun	Translation key
hugosmp.net	shop.hugosmp.net	Translation key
pixel-mc.net	store.pixel-mc.net	Translation key
boholsmp.ultramc.co	bohol-smp.tebex.io	Translation key
stray.gg	store.stray.gg	Translation key
fyresmp.net	store.fyresmp.net	Translation key
pvphub.me	store.pvphub.me	Translation key
unstableevents.net	—	Translation key
playunstable.net	unstableanalysis.com	Translation key
uneasyvanilla.com	uneasyvanilla.com	Translation key
play.vanillaplus.net	vanillaplus.net	Translation key
pvpparadise.net	—	Translation key
play.dgnetwork.in	dgnetwork.in	Translation key

Plugins

Plugin	Source	Exploits in use
AntiSpoof Pro	—	Translation key, Fingerprinting
EXMNT	GitHub	Translation key
TotemGuard	GitHub	Translation key
CheckHacks	GitHub	Translation key
FakeModBlocker	GitHub	Translation key
uModDetect	GitHub	Translation key

Reporting a Bypass

Found a new exploit or a way around the mod? Contact nikoverflow on Discord, or email nikoverflow007@gmail.com. Include reproduction steps, Minecraft version, and any logs or screenshots.