Discourse Email Address improper authorization

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in Discourse (version now known). It has been declared as critical. This vulnerability affects some unknown processing of the component Email Address Handler. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was presented 11/02/2022 as GHSA-x8w7-rwmr-w278. The advisory is shared for download at github.com. This vulnerability was named CVE-2022-39356 since 09/02/2022. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1548.002.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

See VDB-231155, VDB-232055, VDB-233518 and VDB-235604 for similar entries.




CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍


VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.7

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 8.9
CNA Vector (GitHub, Inc.): 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍


Class: Improper authorization
CWE: CWE-285 / CWE-266

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com


09/02/2022 🔍
11/02/2022 +61 days 🔍
11/02/2022 +0 days 🔍
12/04/2022 +32 days 🔍


Advisory: GHSA-x8w7-rwmr-w278
Status: Confirmed

CVE: CVE-2022-39356 (🔍)
See also: 🔍


Created: 11/02/2022 08:44 PM
Updated: 12/04/2022 08:47 AM
Changes: 11/02/2022 08:44 PM (49), 12/04/2022 08:47 AM (12)
Complete: 🔍
Cache ID: 44:645:40


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