this post was submitted on 31 Jul 2023
33 points (97.1% liked)

Lemmy.world Support

3210 readers
14 users here now

Lemmy.world Support

Welcome to the official Lemmy.world Support community! Post your issues or questions about Lemmy.world here.

This community is for issues related to the Lemmy World instance only. For Lemmy software requests or bug reports, please go to the Lemmy github page.

This community is subject to the rules defined here for lemmy.world.

To open a support ticket Static Badge


You can also DM https://lemmy.world/u/lwreport or email [email protected] (PGP Supported) if you need to reach our directly to the admin team.


Follow us for server news ๐Ÿ˜

Outages ๐Ÿ”ฅ

https://status.lemmy.world



founded 1 year ago
MODERATORS
 

Hey everyone! I just had something rather weird and concerning happen. While browsing Lemmy through the default web interface, I clicked on a post link and got the usual server error. I refreshed the page and got the same thing. Then, I refreshed a second time and while the post loaded, I was a bit perplexed as my Lemmy theme was completely different. I thought that was weird, so I decided to go Settings. That's when I realized that the username in the top right corner was not my own. Instead of "Shrinra", it showed "aeharding"! I clicked the link for Settings just to see what would happen, and thankfully, it threw me out of the session entirely. In fact, my actual session was gone and I had to log back in.

A part of me thinks I am crazy. Has anyone else experienced this? If so, it is a known security issue? It is more than a bit concerning to think that someone else may be able to access someone else's session just by navigating to a certain page.

Thanks!

top 9 comments
sorted by: hot top controversial new old
[โ€“] [email protected] 10 points 1 year ago (2 children)

As a note, @[email protected] is the developer of Voyager app.

[โ€“] [email protected] 7 points 1 year ago

Yep, I am familiar. :) It's hard to not be with how popular wefwef/Voyager is.

[โ€“] [email protected] 5 points 1 year ago (2 children)

Probably has some hard coded creds for dev work, and forgot to remove them.

[โ€“] [email protected] 8 points 1 year ago

This is an issue with Lemmy-ui which I have nothing to do with. I probably just won the lottery of being displayed as logged in. ๐Ÿ˜›

[โ€“] [email protected] 1 points 1 year ago

or just a placeholder

[โ€“] [email protected] 6 points 1 year ago (1 children)

Happened to me too once, I saw a completely different username in the top bar, then it quickly reverted to my username once I clicked somewhere else. I thought it was just a glitch at the time as the instance was very buggy, that was before this instance updated to a 0.18.1 rc I think. Never happened again since then and I don't know how to reproduce it.

[โ€“] [email protected] 3 points 1 year ago

The random user switching had been happening occasionally until some update a month ago, something to do with stale websockets. Never heard of anyone successfully exploiting it, like making posts or seeing PMs. All you get is to see someone else's username. OP, if it happens to you again, try to make a post quickly before the session throws you out to prove whether it is a security risk!

[โ€“] [email protected] 3 points 1 year ago

This also happened to me. I believe it was after a system update. Hasn't occurred again.

[โ€“] [email protected] 1 points 1 year ago

Hi!

When exactly did it occur? Was it during the system update? Did you have the time to click on your profile to see where it redirects to?

It also seems like a Lemmy issue rather than a lemmy.world issue, since I have read also some things about it on another instance.

Would love to hear if you have the answers to the questions above. You can also submit a issue on Lemmy's GitHub to notify the developers.