Name As user2 autocomplete the name in the comments input (or Talk chat input) Click on the user name you just autocompleted User2 is redirected to https://nextcloud.com Only works...">Nextcloud: HTML injection with AutoComplete suggestions - vulnerability database | Vulners.comName As user2 autocomplete the name in the comments input (or Talk chat input) Click on the user name you just autocompleted User2 is redirected to https://nextcloud.com Only works...">Name As user2 autocomplete the name in the comments input (or Talk chat input) Click on the user name you just autocompleted User2 is redirected to https://nextcloud.com Only works...">Name As user2 autocomplete the name in the comments input (or Talk chat input) Click on the user name you just autocompleted User2 is redirected to https://nextcloud.com Only works...">
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hackeroneNickvergessenH1:383117
HistoryJul 18, 2018 - 1:45 p.m.

Nextcloud: HTML injection with AutoComplete suggestions

2018-07-1813:45:00
nickvergessen
hackerone.com
24

EPSS

0.001

Percentile

22.7%

  1. As user1 set your displayname to <a href="https://nextcloud.com">Name</a>
  2. As user2 autocomplete the name in the comments input (or Talk chat input)
  3. Click on the user name you just autocompleted

User2 is redirected to https://nextcloud.com

Only works with HTML, not with script

Impact

User1 can trick user2 to render any html