Vulnerability · Published Feb 21, 2024 · Assigned by GitHub_M

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

Medium 6.5

In plain English

A medium-severity incorrect authorization in discourse-calendar from discourse. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.4%top 66.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
discourse	discourse-calendar	>= 2201b254, < dfc4fa15f340189f177a1d1ab2cc94ffed3c1190

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

https://github.com/discourse/discourse-calendar/security/advisories/GHSA-4hh7-6m34-p2jp x_refsource_CONFIRM
https://github.com/discourse/discourse-calendar/commit/dfc4fa15f340189f177a1d1ab2cc94ffed3c1190 x_refsource_MISC