Here is an extract of 1.20-pre7 change log:
To improve safety, the game will now detect symbolic links used inside world directory. For a detailed explanation, check our help article.
Just as said in the help article, symbolic link attack may cause permanent data loss. However, the detection as well as the warning screen aren't ported to lower versions officially, which is the reason why I hurried this mod.
With this mod, a warning screen will show up when trying to open a world with symbolic link, unless the link target is whitelisted in allowed_symlinks.txt.

- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.19.4
- 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 symlink-check-fabric-2.0.3.jar — drop this file into the mods folder
- Download size: 47 KB
- Download link checked 22 Sept 2026 — working
These come from our own check of the pack file, not from the source page.