CrashExploitFixer
ModStops crash exploits from taking down your game servers.
A96/ 100
Why gradeA
How grades workStrengths
Points lost
All 11 criteria
Maintenance
3 points lost24 / 27Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.5 weeks ago (19 Sep 2026) 12 / 12Supports popular versionsWhether the project has a file for a Minecraft version that 15% or more of the popular mods updated in the last 6 months also support. A version many modpacks use, like 1.20.1 or 1.21.1, also counts after a release in the last 12 months.26.3 on Fabric, Quilt, Forge and NeoForge (latest) 9 / 9Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 4 of the last 24 months 3 / 6Stability
Full points22 / 22Removed from modpacksHow many modpacks removed it in a later version of the pack. We can only see this in modpacks with two or more versions. A pack that swaps it for another edition of the same project, or that is rebuilt from scratch, does not count.29 of the 362 modpacks with two or more versions removed it in a later one (8%) 10 / 10Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.No quick fix in 2 years 7 / 7Known conflictsHow many projects say they do not work with it, compared with how widely it is used. Packs, small projects, forks, ports, add-ons, alternatives and old versions do not count.None 5 / 5Transparency
Full points10 / 10Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · DrexHD/CrashExploitFixer 7 / 7Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · DrexHD/CrashExploitFixer 3 / 3Popularity
Full points4 / 4DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.28,493,514 4 / 4Track record
Full points8 / 8AgeHow long the project has existed. It counts less when no new file came out recently.2.2 years, 36 releases 8 / 8Security
PassedFile checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 17 latest files for recent Minecraft versions. See Security
Total96 / 100
68 of the 71 points that apply = 96 out of 100.
About
CrashExploitFixer is a security mod that patches three crash exploits capable of disrupting Minecraft clients or servers. It addresses stack exhaustion caused by deeply nested NBT in entity selectors, excessive memory allocation from malicious network packets, and memory exhaustion from recursively expanding text components. The network-allocation fix covers Forge, NeoForge, and Fabric and is compatible with existing fixes for that issue.
Written from Modrinth . How we write it
In-game changes
Changes the game's code in 3 areas: Game coreChanges 3 game code files in this area: the main loop, lighting and other code the whole game uses., User interfaceChanges 1 game code file in this area: menus, screens, tooltips, the chat window and the in-game overlay. and Networking and multiplayerChanges 1 game code file in this area: connections, the server list and what is sent between your game and a server..
Adds no new blocks, items or other content.
Keeps all of vanilla Minecraft's textures, models and sounds.
Often used with it
See all 30Details
- Creator
- DrexHD
- License
- GNU General Public License v3.0 only
- Downloads
- 28.5M
- Created
- 7 Aug 2024
- Official pages
- Modrinth , CurseForge
- Links
- Source code , Issues , Discord
Security
No harmful code found
We checked its files and read their code, without running it.
What it can do on your computer
- Connects to the internet
- It has code that can go online, for example to check for updates, load skins or send crash reports. Only in its files for Forge 1.19 to 1.21.9. See Privacy
Why we show this: a mod runs on your computer like any program, so harmful code in it can take your accounts or files. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: malware means no grade, and a Warning in a latest file for a recent Minecraft version lowers it.
How we checked
- FilesWe download the files from Modrinth or CurseForge and look at what is inside them and what their code can do, without running them. Fixed rules tell what is harmful.27 latest files: the newest file for each Minecraft version and loader. The answer above is about the 17 for recent versions. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks. See each file in Releases
- Their codeWe turn the code of the files back into readable code and follow what it does, without running it. This shows what it downloads, what it sends and where your login goes.Read without running it
- Author on ModrinthThe disclosure form on Modrinth, where the author declares that the project reads or edits things on your system outside the game. Since 13 Aug 2026, Modrinth's rules require it when this applies.Nothing declared about your system outside the game.
- Looked for, not foundWe looked for these in the file and did not find them.Folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.
- Modrinth and CurseForgeA release with a different file on Modrinth and on CurseForge, whose code is not the same. Each file is checked on its own. Nothing is blocked.Minecraft 1.20.5 to 1.21.4 · Fabric, Quilt · release 1.1.0 · 8 Aug 2024: Modrinthcode differs in 3 releases
crashexploitfixer-fabric-1.1.0+1.21.jar, CurseForgecrashexploitfixer-fabric-1.1.0+1.21.jar. 1 class only in the CurseForge file, in me.drex.crashexploitfixer.fabric.debug:CrasherClient(CurseForge only).Minecraft 1.20.3 to 1.20.4 · Fabric, Quilt · release 1.1.0 · 8 Aug 2024: Modrinthcrashexploitfixer-fabric-1.1.0+1.20.4.jar, CurseForgecrashexploitfixer-fabric-1.1.0+1.20.4.jar. 1 class only in the CurseForge file, in me.drex.crashexploitfixer.fabric.debug:CrasherClient(CurseForge only).Minecraft 1.14.4 to 1.20.1 · Fabric, Quilt · release 1.1.0 · 8 Aug 2024: Modrinthcrashexploitfixer-fabric-1.1.0+1.20.1.jar, CurseForgecrashexploitfixer-fabric-1.1.0+1.20.1.jar. 1 class only in the CurseForge file, in me.drex.crashexploitfixer.fabric.debug:CrasherClient(CurseForge only).
Privacy
We found nothing it sends
We read its code without running it: it contacts no web address while you play.
Why we show this: a mod can send things about you over the internet, like your player name or your login. Contacting an address to check for updates or download files sends nothing about you. Not in the grade: sending data can be normal for what a mod does.
How we checked
- Files readWe read the code without running it. We list each web address the code contacts while you play, and what it sends. Code that is never used is left out.The code of all 17 files, for recent Minecraft versions. See each file in Releases
- Author on ModrinthThe disclosure form on Modrinth, where the author declares crash reports, usage data and advertisements. Since 13 Aug 2026, Modrinth's rules require it when a project collects data on its users or shows advertisements.Nothing declared about crash reports, usage data or advertisements.
AI
No sign that AI was used to make it
We looked for AI tools in its texts, files, images and code history and found none.
No sign of AI in the game
We found no AI service, AI library or AI model file in its code.
Why we show this: some players and servers avoid projects made with AI, and AI in the game can send what you write to an online service. Not in the grade: using AI does not tell whether a project works well or is kept up to date.
How we checked
- Author on ModrinthThe disclosure form on Modrinth. Since 13 Aug 2026, Modrinth's rules require it when a substantial part of the code is AI output, when an asset is mainly AI output, or when the project or its page relies on generative AI.No AI content or AI features declared.
- Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.Nothing found
- Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.Nothing found40 changelogs read
- Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.Nothing found
- Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.Nothing found1 image read
- Code of the modThe code and files of the mod, read without running it: addresses of AI services, AI libraries, AI model files and a place for your own AI key.No AI service, AI library or AI model file14 code files read
Compatibility
See all 36 filesFabric
NeoForge
Forge
Quilt
Point at or tap a version to see its loaders.
Runs onWhere to install it: in your game, on the server, or both. As the author says on Modrinth.Install it on the server. Players join without installing it. It also works in singleplayer.
RequiresProjects you must also install for it to work. From the author's lists for its files for recent Minecraft versions, or from its project page.Nothing
OptionalProjects it can work with but does not need. The author lists them.Nothing
IncludesProjects packed inside its files.Nothing
Speed of updatesHow fast it gets a file for new Minecraft versions, on average, compared with similar projects. Not part of the grade.Slower than most mods. On average, it gets a file 109 days after a new Minecraft version comes out. Measured on the last 6 Minecraft versions.
Related projects
Projects that need CrashExploitFixer to work.
Modpacks using this project
Find modpacks with it| Oct 2024 | 60 |
|---|---|
| Nov 2024 | 68 |
| Dec 2024 | 83 |
| Jan 2025 | 94 |
| Feb 2025 | 87 |
| Mar 2025 | 103 |
| Apr 2025 | 96 |
| May 2025 | 115 |
| Jun 2025 | 119 |
| Jul 2025 | 106 |
| Aug 2025 | 113 |
| Sep 2025 | 127 |
| Oct 2025 | 101 |
| Nov 2025 | 102 |
| Dec 2025 | 114 |
| Jan 2026 | 131 |
| Feb 2026 | 118 |
| Mar 2026 | 109 |
| Apr 2026 | 122 |
| May 2026 | 160 |
| Jun 2026 | 188 |
| Jul 2026 | 209 |
| Aug 2026 | 185 |
| Sep 2026 | 187 |
More modpacks put it in their new versions than a year ago: 175 a month now, 113 a year agoThe average of the last 6 months, compared with the same 6 months a year before. We say it only when the change is large..
1,469 modpacks include CrashExploitFixer in at least one of their versions. Here are the 30 most downloaded.
Better MC [FORGE] - BMC421.1M downloadslast version with it 9 Oct 2026
Cave Horror Project 18.2M downloadslast version with it 1 Oct 2026
Better MC [FABRIC] - BMC25.9M downloadslast version with it 15 Jul 2026
Immersed With Shaders4.5M downloadslast version with it 16 Nov 2024
DarkRPG - RPG with Magic, Origins, Quests, Adventure3.9M downloadslast version with it 24 Oct 2026
Beyond Depth3.4M downloadslast version with it 18 Oct 2026
SteamPunk [LPS]3M downloadslast version with it 20 May 2026
Fear Nightfall: Remains of Chaos2.9M downloadslast version with it 13 Sep 2025
Lucky World Invasion2.2M downloadslast version with it 26 Jul 2025
MC Eternal 21.9M downloadslast version with it 16 Sep 2026Often in the same modpacks
Mods that modpacks often add together with CrashExploitFixer. Share: how many of the modpacks with CrashExploitFixer also have that mod.
fix GPU memory leakAModin 67% of the modpacks with CrashExploitFixer
ConnectivityAModin 65% of the modpacks with CrashExploitFixer
Packet FixerAModin 64% of the modpacks with CrashExploitFixer
BadOptimizationsAModin 63% of the modpacks with CrashExploitFixer
sparkAModin 62% of the modpacks with CrashExploitFixer
Server Performance - Smooth Chunk SaveAModin 62% of the modpacks with CrashExploitFixer
Chat HeadsAModin 61% of the modpacks with CrashExploitFixer
Sodium Dynamic LightsCModin 59% of the modpacks with CrashExploitFixer
AllTheLeaks (Memory Leak Fix)AModin 58% of the modpacks with CrashExploitFixer
AmendmentsAModin 56% of the modpacks with CrashExploitFixerLatest files
The newest file for each Minecraft version and loader. The files for recent versions come first. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.
26.3Fabric, QuiltPassedOur checks found nothing harmful in this file. Its code was read too.
26.3NeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
26.3ForgePassedOur checks found nothing harmful in this file. Its code was read too.
26.1 to 26.2Fabric, QuiltPassedOur checks found nothing harmful in this file. Its code was read too.
26.1 to 26.2NeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
26.1 to 26.2ForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.10 to 1.21.11Fabric, QuiltPassedOur checks found nothing harmful in this file. Its code was read too.
1.21.10 to 1.21.11NeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.10 to 1.21.11ForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.5 to 1.21.9Fabric, QuiltPassedOur checks found nothing harmful in this file. Its code was read too.
36 releases
26.3The latest file for its Minecraft version and loaderForgePassedOur checks found nothing harmful in this file. Its code was read too.
26.3The latest file for its Minecraft version and loaderNeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
26.3The latest file for its Minecraft version and loaderFabric, QuiltPassedOur checks found nothing harmful in this file. Its code was read too.
1.19 to 1.20.4The latest file for its Minecraft version and loaderForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.20.5 to 1.21The latest file for its Minecraft version and loaderForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.20.5 to 1.21The latest file for its Minecraft version and loaderFabric, QuiltPassedOur checks found nothing harmful in this file. Its code was read too.
26.1 to 26.2The latest file for its Minecraft version and loaderNeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.5 to 1.21.9The latest file for its Minecraft version and loaderNeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.1 to 1.21.4The latest file for its Minecraft version and loaderNeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.10 to 1.21.11The latest file for its Minecraft version and loaderNeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
26.1 to 26.2The latest file for its Minecraft version and loaderForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.5 to 1.21.9The latest file for its Minecraft version and loaderForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.5 to 1.21.9The latest file for its Minecraft version and loaderFabric, QuiltPassedOur checks found nothing harmful in this file. Its code was read too.
1.21.1 to 1.21.4The latest file for its Minecraft version and loaderFabric, QuiltPassedOur checks found nothing harmful in this file. Its code was read too.
1.21.10 to 1.21.11The latest file for its Minecraft version and loaderFabric, QuiltPassedOur checks found nothing harmful in this file. Its code was read too.
1.19 to 1.20.4The latest file for its Minecraft version and loaderFabric, QuiltPassedOur checks found nothing harmful in this file. Its code was read too.
1.21.1 to 1.21.4The latest file for its Minecraft version and loaderForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.18 to 1.18.2The latest file for its Minecraft version and loaderFabric, QuiltPassedOur checks found nothing harmful in this file. Its code was read too.