CVE-2024-24817 User can see invitees in events created in PMs and private categories

Medium 4.3 Published Updated

Unauthenticated attackers can view invitee lists for events in private Discourse categories or PMs, exposing user participation data.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2024-24817?

CVE-2024-24817 is a medium-severity vulnerability in discourse-calendar, published on 22 Feb 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Discourse Calendar adds the ability to create a dynamic calendar in the first post of a topic on the open-source discussion platform Discourse. Prior to version 0.4, event invitees created in topics in private categories or PMs (private messages) can be retrieved by anyone, even if they're not logged in. This problem is resolved in version 0.4 of the discourse-calendar plugin. While no known workaround is available, putting the site behind `login_required` will disallow this endpoint to be used by anonymous users, but logged in users can still get the list of invitees in the private topics.

Weakness: CWE-200

Which versions are affected by CVE-2024-24817?

It affects 1 product.

Products include Discourse Calendar.

How do I fix CVE-2024-24817?

No fix has been published for CVE-2024-24817 yet. Limit exposure of the affected software until one is available.

Is CVE-2024-24817 being exploited?

There is no known exploitation of CVE-2024-24817 in the wild and no public exploit code.

Sources

Also known as GHSA-wwq5-g5cp-c69f.

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