How to Fix the Minecraft Java Security Exploit (Minecraft Log4j Security Bug Fix)

Minecraft Java Edition recently had a security exploit that effected both Minecraft Clients and Minecraft servers. This video gives you an in-depth look at the issue and how to fix it in Minecraft. The Minecraft Log4j Security Bug is one of the biggest security exploits Minecraft has had in recent years. Luckily, both Mojang and the community were quick to respond and fix this Minecraft Java Security Exploit.

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About this video: If you want to know how to fix the Minecraft Java Security exploit in Log4j, this is the video for you! We show you exactly how to fix the Log4j Security bug on both Minecraft servers and in Minecraft clients. We go over everything from what the Log4j Security exploit is to how to fix this issue on Vanilla Minecraft, what to do about Log4j on modded Minecraft, and how to fix all versions of Minecraft server so they are not affected by Log4j. Thus, without anymore delay, let’s jump right into how to fix the Minecraft Java security exploit.

First things first, I want to mention what this security exploit is. It takes the Log4j Java Logging Library and uses a vulnerability in it. In doing so, it risks your computer or Minecraft server being compromised.

How do you fix the Minecraft Java security exploit in vanilla Minecraft? Well, it’s pretty simple. Just close out of all Minecraft Java instances you have, close out of the Minecraft Java Launcher, and reopen the launcher and Minecraft. That will fix it on all clients for vanilla Minecraft. From 1.8 to 1.18 and every version in between.

When it comes to modded Minecraft though, things are a bit different. Forge has updated to 1.12.2 to 1.18 to include this fix. You just need to update Forge to the most recent Forge version of what ever version of Minecraft you are using. Third party launchers though are a bit different, and you will need to confirm that those launchers are safe and secure before playing with them.

With that, you are now secure against the log4j Minecraft security exploit. We also recommend updating your Java to Java 17 using the link in the description above. This goes a long way towards preventing things like this from happening and the RCE portion of this bug.

Nevertheless, that is how to fix the Minecraft Security bug. If you have any questions, let us know in the comments. We will try our best to help you out. Thanks for watching, and be sure to give this video a thumbs up and subscribe if you haven’t already!

Note: Some of the above links are affiliate links. I may receive a commission at no additional cost to you if you go to these sites and make a purchase.

[TheBreakdownXYZ]

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[spcameron]

Love the content, you helped me with so many problems with installing forge over the years 😂

[lightknighttnt]

Is it ok to launch 1.8.9 if you uninstall then reinstall Minecraft using the main launcher with no mods?

[Chapmike]

OMG, I'm glad this didn't affect singleplayer. It would have been a disaster if all the unlisted versions that were unofficially archived by the community were completely compromised.

[chaosbuilder]

The Breakdown is literaly the best channel when you need help with minecraft
Edit: Do you know if there is any chance that forge 1.8.9 will get a fix? As thats what i play the most, i play hypixel skyblock

[farxymc]

Just wondering, if I play on 1.18.1 with latest java version (i think 8 but not sure) does that mean that I can play on any servers (even if they are made for this exploit)
Happy New Year! :)

[UltraBlastLT]

For the automated download will it say minecraft launcher updating or will it just open up like it regular does.

[itsronplayz]

4:13 DOGGO



























and ty for the helpful tutorial

[alt_f_to_win]

@The Breakdown Is the newest optifine (1.18.1) safe to use?

[strykeplaysmcjohnpickhypix]

@The Breakdown If I followed all the steps in the video, but am using the old minecraft launcher rather than the new one, will I still be protected from Log4J?

[iineedSleep]

Hey! Question! :)
Is this for the new launcher?- Because I haven't downloaded the new launcher or 1.18, so am I good? or do i still need to fix this?

[the-neonfish]

in the video description, it says that forge fixed this for 1.12.2 to 1.18, but what about previous versions like 1.8.9?

[catboyzyle]

can I still use 1.8.9 forge for Minecraft pvp or would I have to switch to something like lunar?

[lebanana]

Hi, i wanted to ask smth, if i'm not playing minecraft anymore or barely playing something on my pc am i vulnerable?

[midnightrose]

I have a bit of a problem I was hoping you could help me with. Every time I go to minecraft realms its gives me a notice saying "client outdated! Your client is not compatible with Realms. Please use the most recent version of Minecraft. Realms is not compatible with snapshot versions." I'm confused because I have 1.18 optifine and only when I turn off optifine it lets me join the realm. It only does it for realms, singleplayer and multiplayer work fine. Does this have to do with the security bug? Not sure if this changes anything but im on mac.

[pilot]

Hey is 1.8.9 forge safe as long as i've launched 1.18 and got everything updated along with the server being patched because I have a modded client I use to play hypixel on.

[amritraychaudhuri]

So if I just close the game and the launcher(default) and run it again like it says, can I still play or should I get java
P.S: I am attempting to join 2b2t for the first time (no mods)

[sbcu]

What is the latest java 8 version that is fixed? good video

[zcxriss]

Am i okay if i havent played in a few months? Or should i log into my computer and update it.

[ganza]

Do you need to fix this if you have a minecraft realm only?