FeloxAC Artifacts

Updated every 15 minutes

FiveM server artifacts, checked.

Every FXServer build marked OK, broken or unsafe, with notes on which artifact closed which exploit, crash or timeout problem.

4,275builds tracked
45with known issues
42security & network notes
7290FiveM minimum

Which artifact fixed what

Security, voice and network fixes in FXServer. If your build is below the fix, your server is still exposed.

Security

Server crashes from malformed connection, HTTP and latent-event input

Missing bounds checks in the connection handshake, the HTTP request parser and latent event reassembly could crash the server when it received crafted data. Anyone who can reach the server's port could trigger it. Update to 38435 or newer.

Fixed in 384357892692
Voice

Mumble server network robustness

Oversized or invalid outgoing voice messages used to hit an assertion. They are now dropped cleanly, and the send queue is drained properly. The voice server should be less likely to stall or crash under bad traffic.

Fixed in 38182Partly verifiedbac0347
Security

Latent event reassembly is now bounded

The server's reassembly of large client-to-server latent events got hard limits, plus diagnostics for 'latent ACK overflow'. Older builds let a client keep more partial event state than they needed to, which costs memory and CPU.

Fixed in 38004Partly verifiede6d726fddd7084
Network

Network-thread hitches and mass timeouts under reliable-queue pressure

On recent recommended builds, servers saw network and sync thread hitches and mass 'Timed out after 60 seconds' disconnects (GitHub #4244). 38004 bundles several fixes: ENet stops scanning the reliable queue when the window is full, latent event fragments go out as unreliable fragments, and the sync code keeps frames based on client silence. One user still reported timeouts on 38004, and 38164 adds a related backlog fix.

Security

One client could freeze the server by flooding game events

Before 37262 there was no core rate limit on netGameEvent packets. A single client could flood events such as weaponDamageEvent until the main thread hung and txAdmin restarted the server. The issue was reported on 35636 and 36727. 37262 drops clients that go over the new 'netGameEvent' rate limiter.

Security

Windows server can hang under weaponDamageEvent flooding

Fixed in 37262Affected 35636Windows#4239
Network

Timeouts from a OneSync frame-backlog change

A OneSync 'improvements' change in 28814 removed the larger frame backlog kept for clients that had been silent for more than 5 seconds. It was rolled back in 31602 'to fix timeout issue'. Avoid 28814 to 31550 if players are timing out.

Fixed in 31602Affected 28814–31550Partly verified0db8a5ff0591d1
Security

Better rate limiting for client latent events

Rate limiting of latent (TriggerLatentServerEvent) traffic from clients was tightened in the reassembly packet handler. On older builds a client could push latent event traffic harder than intended.

Fixed in 28871Partly verifiedae540b0

See all 42 fixes

FeloxAC artifacts

FXServer builds tested and hardened by the FeloxAC team.

No FeloxAC builds published yet. They will be listed here when they are ready.

BuildStatusNotesDateDownload
38386OK1 missing security fix(es)2026-11-05
38343OK1 missing security fix(es)2026-11-04
38317OK1 missing security fix(es)2026-11-04
38220OK1 missing security fix(es)2026-11-03
38182OKVoiceMumble server network robustness1 missing security fix(es)2026-11-02
38164OK2 missing security fix(es)2026-11-02
38055OK2 missing security fix(es)2026-10-30
38039OK2 missing security fix(es)2026-10-29
38004OKSecurityLatent event reassembly is now boundedNetworkNetwork-thread hitches and mass timeouts under reliable-queue pressure2 missing security fix(es)2026-10-28
37872OK3 missing security fix(es)2026-10-26
37850OK3 missing security fix(es)2026-10-23
37739Failed buildFailed build2026-10-22WindowsLinux
37692OK3 missing security fix(es)2026-10-21
37655OK3 missing security fix(es)2026-10-21
37579OK3 missing security fix(es)2026-10-20
37563OK3 missing security fix(es)2026-10-19
37555OK3 missing security fix(es)2026-10-19
37474OKStabilityLinux crash when starting escrow-protected resources3 missing security fix(es)2026-10-16
37437Known issueLinux crash when starting escrow-protected resources2026-10-16
37389Known issueLinux crash when starting escrow-protected resources2026-10-15
37346Known issueLinux crash when starting escrow-protected resources2026-10-14
37287OK3 missing security fix(es)2026-10-13
37262OKSecurityOne client could freeze the server by flooding game eventsSecurityWindows server can hang under weaponDamageEvent flooding3 missing security fix(es)2026-10-13
37175OK5 missing security fix(es)2026-10-09
37150OK5 missing security fix(es)2026-10-07
36897Known issueNetwork-thread hitches and mass timeouts under reliable-queue pressure2026-09-30
36727OKLinux download unavailable (Windows is fine)2026-09-28Linux
35945OK5 missing security fix(es)2026-09-07
35805OK5 missing security fix(es)2026-09-02

View all 4,275 builds

Questions

Which FiveM artifact should I use?

Use the recommended build shown at the top of this page. It is the newest build FiveM recommends that has no issues reported to us. Builds marked OK are also fine.

How do I find my server artifact number?

Your server console prints it on start (for example "FXServer-master v1.0.0.38435"). In txAdmin it is shown as the FXServer version on the dashboard.

What does "missing security fixes" mean?

A later build fixed an exploit or crash that cheaters could abuse. Your build does not have that fix yet, so updating closes the hole.

Is an old artifact dangerous?

Builds below the FiveM minimum cannot be used anymore, and out-of-support builds no longer get fixes. Old builds miss security fixes listed on this page.

How do I update my artifact?

Stop the server, back up your server folder, replace the FXServer files with the new download (keep your server-data and resources), then start again.