Home/CVE/Discourse is an open source discussion platform. Versions prior to 2.7.13 in `stable`, 2.8.0.beta11 in `beta`, and 2.8.0
CVE

CVE-2022-21684

Discourse is an open source discussion platform. Versions prior to 2.7.13 in `stable`, 2.8.0.beta11 in `beta`, and 2.8.0

Discourse is an open source discussion platform. Versions prior to 2.7.13 in stable, 2.8.0.beta11 in beta, and 2.8.0.beta11 in tests-passed allow some users to log in to a community before they should be able to do so. A user invited via email to a forum with must_approve_users enabled is going to be automatically logged in, bypassing the check that does not allow unapproved users to sign in.

They will be able to do everything an approved user can do. If they logout, they cannot log back in. This issue is patched in the stable version 2.7.13, beta version 2.8.0.beta11, and tests-passed version 2.8.0.beta11.

One may disable invites as a workaround. Administrators can increase min_trust_level_to_allow_invite to reduce the attack surface to more trusted users.

MEDIUM · CVSS 4.3 EPSS 0.00128
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-287Improper Authentication
CWE-287Improper Authentication
▤

Affected Products & Versions

2
discourse< 2.7.13
discourseall versions
▣

Scoring & Timeline

4.3
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 Jan 2022 · 09:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/discourse/discourse/commit/584c6a2e8bc705072b09a9c4b55126d6f8ed4ad2PatchThird Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-p63q-jp48-h8xhPatchThird Party Advisory
https://meta.discourse.org/t/invite-redemption-allowed-user-to-access-forum-before-approval/214328Issue TrackingPatchVendor Advisory
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