From 3df85b4c747f961119a306ca2ea817136c1b4d6f Mon Sep 17 00:00:00 2001
From: youhavetrouble <youhavetrouble@youhavetrouble.me>
Date: Mon, 17 Apr 2023 18:11:08 +0200
Subject: [PATCH] Initial commit

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+# Minecraft exploits and how to fix them
+
+## Preface
+This guide will assume you are running [Purpur](https://purpurmc.org). Some settings required for this guide to work are
+not available in Paper or Spigot. Similar exploits might exist in vanilla, fabric or forge servers, and you will have to
+find mods that fix them on those loaders.
+
+
+## Exploits
+
+### Command spam
+
+While even spigot will protect you from this exploit, there's a slight oversight that will enable a single command to be
+usable to perform this one. To fix this, simply remove /skill command from the spam exclusions list in spigot.yml.
+
+`spigot.yml`
+```yaml
+commands:
+  spam-exclusions: []
+```
+
+### Treasure search
+
+When new treasure map is generated, usually via cartographer villager or opening a chest with treasure map in it, the
+server searches for the treasure that map should lead to. This search is done in a way that in most cases causes a lot
+of chunks loading and possibly generating them. This search can halt the server for long enough that watchdog process 
+kills it. It can also be triggered by feeding dolphins fish.
+
+#### Option 1
+
+To fix this one you basically have to disable treasure maps and dolphins searching for treasure. This is the recommended
+and 100% effective solution.
+
+`paper-world-defaults.yml`
+```yaml 
+environment:
+  treasure-maps:
+    enabled: false
+```
+
+`purpur.yml`
+```yaml
+world-settings:
+  default:
+    mobs:
+      dolphin:
+        disable-treasure-searching: true
+```
+
+#### Option 2
+
+Alternatively, you can keep the maps enabled, but set up vanilla worldborder and make sure your world is pregenerated
+within the border. Then you can just make sure that already discovered treasures are valid as the search result. This 
+will prevent the treasure search from loading chunks that are not generated.
+
+`paper-world-defaults.yml`
+```yaml
+  treasure-maps:
+    find-already-discovered:
+      loot-tables: true
+      villager-trade: true
+```