Displaying user badges can leak topic titles to users that have no access to the topic
Package
Discourse
(Discourse)
Affected versions
stable <= 2.8.9; beta <= 2.9.0.beta10; tests-passed <= 2.9.0.beta10
Patched versions
stable > 2.8.9; beta > 2.9.0.beta10; tests-passed > 2.9.0.beta10
Impact
Under certain conditions, a user badge may have been awarded based on a user's activity in a topic with restricted access. Before this vulnerability was disclosed, the topic title of the topic associated with the user badge may be viewed by any user. If there are sensitive information in the topic title, it will therefore have been exposed.
Patches
This issue is patched in the latest stable, beta and tests-passed versions of Discourse
Workarounds
There are no workarounds available.