Jitsi privacy flaw enables one-click stealth audio and video capture

59 zielmicha 7 7/23/2025, 8:31:16 PM zimzi.substack.com ↗

Comments (7)

Telemakhos · 1h ago
Maybe my Mac is set to be paranoid, but can you share video without being asked to give the mic and camera permission to operate? I chat with jitsi all the time and have to give jitsi explicit permission to use the mic/camera each time.
spaceport · 1h ago
Where do I pay to read security research writeups with only cats used in explainer images and examples? This exploit is cute.
3eb7988a1663 · 3h ago
Not that I use Jitsi, but I suddenly feel more embarrassed about my number of open tabs. Some other exploit could have silently been launched long ago.
firefax · 2h ago
Is this understood to be new? I think I got hit with this quite a long time ago.

(As in during the pandemic -- long ago in vuln times.)

I am willing to discuss it, off the record, if someone provides their signal information.

No comments yet

unsnap_biceps · 2h ago
Can someone describe the feature that this is used for? I struggle to think of any valid reason for automatic joining with audio/video like that.
o11c · 3h ago
Does this apply even for iframes, or not?
zimzi · 3h ago
Generally no - cross origin iframes don't allow camera/audio by default. Even if the toplevel site allows it (via https://developer.mozilla.org/en-US/docs/Web/API/HTMLIFrameE...), user still needs to grant permissions to toplevel site. Of course you can still use window.open and top.location.href in the iframe and use the same trick as in the article.