this post was submitted on 07 Sep 2026
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298
My Homelab Got Hacked - A Postmortem – Phunky Cafe (phunky.cafe)
submitted 3 days ago by michaelharley@infosec.pub to c/selfhosted@lemmy.world
51 comments fedilink hide all child comments
 

Welp. My Forgejo instance got popped with an RCE two days ago by CVE-2026-60004. Luckily, I noticed the following morning and had the day free to figure out what happened. Let's dive in!

As a homelab enthusiast, I found this a very interesting post. Here are my take aways from the post that I'm implementing myself:

  • Miner detection. I've updated monitoring rules to now watch the CPU on my hosts. If the same thing happened to me I would not have been alerted at all as I'm doing simple up / down monitoring. Fixed.
  • Access logging. I turned on access logging for my homelab Caddy instances.
  • Log retention. I have increased the amount and retention of my logging. The hope is this will help me reconstruct what happened after a breach.
  • Logs offsite. The VPS access logs now ride along with the normal backup process, which runs hourly. The homelab side still only gets caught by the weekly VM backup, so that's next.
  • Closed an open signup. My webtrees instance (genealogy) had self registration enabled, which is the same door this guy got hit through. Oops. Fixed.
  • Built a tool. log-inventory.sh, so "could I actually reconstruct what happened" is a command I run instead of a thing I assume.
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[–] chunkystyles@sopuli.xyz 9 points 2 days ago (1 children)

I just recently went through a much more benign, but scary nonetheless version of this.

I realized that my Ansible directory, that I had made public on GitHub to share as an example to some folks, had secrets committed and pushed.

It was the direct URL and credentials of an app I developed to store non-PII customer data. Now, it wouldn't be the end of the world if someone noticed this and scraped the data, but it wouldn't be good, either.

Luckily, I have Caddy access logs, and it appears no one ever accessed it.

So I pulled the secrets out of the Ansible directory and made the repo private, I rotated the credentials, and installed Crowdsec to monitor Caddy access logs and ban bad actors.

I only noticed the secrets because I had just setup Authelia as an OAuth2 provider for my homelab, and I was adding it to my backup scripts.

[–] Appoxo@lemmy.dbzer0.com 3 points 2 days ago

Ayy, just went through the same troubles with Authelia earlier this week.
Only 4 services I could conmect ao far but still neat to have :)