NoFingerprint — Resource Pack Fingerprinting Patch
NoFingerprint is a fabric client-side mod that fixes an exploit in Minecraft’s resource pack downloader. This vulnerability allows malicious servers to fingerprint your Minecraft account by forcing all resource pack downloads to occur in a server-controlled folder path.
Why this matters
In vanilla Minecraft, when a server sends a resource pack, the game generates a download folder based on a server-provided UUID. Some servers discovered they can:
Track players across sessions
Correlate accounts
Build unique device “fingerprints”
Log download identifiers tied to your account
All without your permission.
This creates a silent privacy leak and has already been weaponized on PvP and cracked servers.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.4
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as nofingerprint-1.0.0.jar — drop this file into the mods folder
- Download size: 13 KB
- Download link checked 10 Sept 2026 — working
These come from our own check of the pack file, not from the source page.