CVE-2022-39356: Discourse user account takeover via email and invite link
First published: Wed Nov 02 2022(Updated: )
Discourse is a platform for community discussion. Users who receive an invitation link that is not scoped to a single email address can enter any non-admin user's email and gain access to their account when accepting the invitation. All users should upgrade to the latest version. A workaround is temporarily disabling invitations with `SiteSetting.max_invites_per_day = 0` or scope them to individual email addresses.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Discourse | <2.8.10 | |
| Discourse | =2.9.0-beta1 | |
| Discourse | =2.9.0-beta10 | |
| Discourse | =2.9.0-beta2 | |
| Discourse | =2.9.0-beta3 | |
| Discourse | =2.9.0-beta4 | |
| Discourse | =2.9.0-beta5 | |
| Discourse | =2.9.0-beta6 | |
| Discourse | =2.9.0-beta7 | |
| Discourse | =2.9.0-beta8 | |
| Discourse | =2.9.0-beta9 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2022-39356?
CVE-2022-39356 is considered a high-severity vulnerability due to its potential for unauthorized account access.
How do I fix CVE-2022-39356?
To address CVE-2022-39356, users should upgrade to the latest version of Discourse.
Who is affected by CVE-2022-39356?
CVE-2022-39356 affects all users of Discourse versions prior to 2.8.10 and beta versions of 2.9.0.
What does CVE-2022-39356 allow an attacker to do?
CVE-2022-39356 allows an attacker to access the account of any non-admin user by exploiting invitation links not scoped to an email address.
Are there any workarounds for CVE-2022-39356?
There are no specific workarounds for CVE-2022-39356; upgrading to a secure version is the recommended action.
- agent/type
- agent/references
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/remedy
- agent/last-modified-date
- agent/author
- agent/title
- agent/severity
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/discourse
- canonical/discourse
- version/discourse/2.9.0-beta1
- version/discourse/2.9.0-beta10
- version/discourse/2.9.0-beta2
- version/discourse/2.9.0-beta3
- version/discourse/2.9.0-beta4
- version/discourse/2.9.0-beta5
- version/discourse/2.9.0-beta6
- version/discourse/2.9.0-beta7
- version/discourse/2.9.0-beta8
- version/discourse/2.9.0-beta9