CVE-2024-26145 Uninvited user is able to join and mark the attendance of the the private event

Medium 6.5 Published Updated

Uninvited users can join and mark attendance for private events in Discourse Calendar by crafting specific requests, allowing unauthorized data modification.

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-2024-26145?

CVE-2024-26145 is a medium-severity missing authorization vulnerability in discourse-calendar, published on 21 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 Discourse. Uninvited users are able to gain access to private events by crafting a request to update their attendance. This problem is resolved in commit dfc4fa15f340189f177a1d1ab2cc94ffed3c1190. As a workaround, one may use post visibility to limit access.

Weakness: CWE-863

Which versions are affected by CVE-2024-26145?

It affects 1 product.

Products include Discourse Calendar.

How do I fix CVE-2024-26145?

No fix has been published for CVE-2024-26145 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2024-26145 being exploited?

There is no known exploitation of CVE-2024-26145 in the wild and no public exploit code.

Sources

Also known as GHSA-4hh7-6m34-p2jp.

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