CVE-2022-41913 : Security Advisory and Response

Discourse-calendar plugin for Discourse messaging platform exposes members of hidden groups, impacting sites with post events enabled.

Understanding CVE-2022-41913

This vulnerability affects the discourse-calendar plugin, allowing users to list members of private groups or public groups with private members.

What is CVE-2022-41913?

Discourse-calendar vulnerability in sites with post events enabled allows user listing of private group members. Patched in commit

ca5ae3e7e

.

The Impact of CVE-2022-41913

Users can create and edit post events, potentially exposing private group members. Mitigation includes upgrading or disabling specific settings.

Technical Details of CVE-2022-41913

The vulnerability is rated medium with a CVSS score of 4.3. It involves exposure of sensitive information to unauthorized actors.

Vulnerability Description

Users can list members of private groups or public groups with private members, impacting sites with post events enabled.

Affected Systems and Versions

Vendor: discourse, Product: discourse-calendar, Versions < 0.3 are affected by this vulnerability.

Exploitation Mechanism

The vulnerability allows users to view and list members of hidden groups, potentially compromising the privacy of group members.

Mitigation and Prevention

To mitigate CVE-2022-41913, immediate steps include upgrading to the patched version and disabling specific settings.

Immediate Steps to Take

Upgrade to a version that includes commit

ca5ae3e7e

or disable the

discourse_post_event_enabled

setting.

Long-Term Security Practices

Regularly update the discourse-calendar plugin to the latest version and implement security best practices to prevent similar vulnerabilities.

Patching and Updates

Ensure that future releases of the plugin include the patched commit

ca5ae3e7e

to address the vulnerability.