Protect Your Server from Crashers, Dupes, and Packet Exploits.
ExploitFixer is a high-performance packet filter for Spigot, Paper & Folia. It blocks malicious clients, invalid packets, and common duplication methods before they ever hit your server.
Requires HamsterAPI. Active Discord Support.
Enterprise-Grade Protection, Zero Compromise.
Packet Limiter & Filter
Dynamically blocks oversized packets and rate-limits connections to prevent Netty exploits and crashers.
CustomPayload Protection
Stops malicious CustomPayload data used by the most common crash clients before it can be processed.
NBT & Item Exploit Fixes
Sanitizes or blocks invalid NBT data in books, signs, and lecterns to prevent server-crashing exploits.
Advanced Dupe Prevention
Patches common and complex duplication methods, including offline packet dupes and invalid inventory slot exploits.
Hacked Item Sanitization
Reconstructs or removes malformed items spawned via creative mode to maintain server integrity.
High-Performance Core
Built on the native HamsterAPI packet listener for minimal server overhead, ensuring protection doesn't cause lag.
Get Protected in Minutes.
1. Install Plugin
Download ExploitFixer.jar and place it in your server's /plugins folder.
2. Add Dependency
Install the required HamsterAPI for the best performance and compatibility.
3. Restart & Secure
Restart your server. ExploitFixer is now actively protecting you. Customize the config.yml as needed.
Choose Your License.
Monthly Subscription
Perfect for testing or short-term projects. Always get the latest updates.
(renews at $1.99)
Lifetime License
Pay once, own it forever. The most popular choice for long-term server protection.
Prices are indicative and may vary by marketplace. All purchases include Discord support.
Have Questions? We Have Answers.
ExploitFixer requires HamsterAPI to function correctly. For BungeeCord networks, it is highly recommended to also use FlameCord for comprehensive network-level protection.
The plugin supports a wide range of versions from 1.8.x to 1.21.x on Spigot, Paper, Folia and their forks. Always check the official marketplace pages for the most up-to-date compatibility information.
The developer recommends against using it with other packet listeners like ProtocolLib. ExploitFixer uses its own high-performance listener (HamsterAPI) for security and to avoid potential conflicts or performance issues.
The fastest way to get help, report bugs, or ask questions is by joining our Official Discord Server.
Stop Exploits Before They Stop You.
Join hundreds of protected servers. Upgrade your server's security and stability today with ExploitFixer.
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