CVE-2022-21642 Exposure of whisper participants in discourse
An attacker can view private whisper participants in Discourse forums by triggering user suggestions, exposing sensitive membership data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-21642?
CVE-2022-21642 is a medium-severity vulnerability in Discourse Discourse, published on 5 Jan 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Discourse is an open source platform for community discussion. In affected versions when composing a message from topic the composer user suggestions reveals whisper participants. The issue has been patched in stable version 2.7.13 and beta version 2.8.0.beta11. There is no workaround for this issue and users are advised to upgrade.
Weakness: CWE-200
Which versions are affected by CVE-2022-21642?
1 open source package ship an affected version, including discourse. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
discourse Bitnami | All versions | 2.7.13 |
Products include Discourse Discourse.
How do I fix CVE-2022-21642?
Upgrade discourse to 2.7.13 or later.
Is CVE-2022-21642 being exploited?
There is no known exploitation of CVE-2022-21642 in the wild and no public exploit code.
Other vulnerabilities in Discourse Discourse
- CVE-2021-41163 RCE via malicious SNS subscription payload
- CVE-2022-36066 Discourse vulnerable to RCE via admins uploading maliciously zipped file
- CVE-2022-39356 Discourse user account takeover via email and invite link
- CVE-2023-22468 Discourse vulnerable to Cross-site Scripting in local oneboxes
- CVE-2026-27934 Discourse leaks private topic title and post excerpt via user action API endpoint
Sources
Also known as BIT-discourse-2022-21642, GHSA-mx3h-vc7w-r9c6.