CVE-2023-27266: Disclosure of team owner email address when when accessing the teams API
First published: Mon Feb 27 2023(Updated: )
Mattermost fails to honor the ShowEmailAddress setting when constructing a response to the /api/v4/users/me/teams API endpoint, allowing an attacker with team admin privileges to learn the team owner's email address in the response.
Credit: responsibledisclosure@mattermost.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mattermost Mattermost Server | >=5.12.0<7.7.0 |
Remedy
Update Mattermost to version 7.7.0 or higher.
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Reference Links
Frequently Asked Questions
What is CVE-2023-27266?
CVE-2023-27266 is a vulnerability in Mattermost that allows an attacker with team admin privileges to learn the team owner's email address.
What is the severity of CVE-2023-27266?
The severity of CVE-2023-27266 is low with a severity value of 2.7.
How does Mattermost fail to honor the ShowEmailAddress setting in CVE-2023-27266?
In CVE-2023-27266, Mattermost fails to honor the ShowEmailAddress setting when constructing a response to the /api/v4/users/me/teams API endpoint.
Which version of Mattermost is affected by CVE-2023-27266?
Mattermost versions between 5.12.0 and 7.7.0 are affected by CVE-2023-27266.
How do I fix CVE-2023-27266 in Mattermost?
To fix CVE-2023-27266 in Mattermost, it is recommended to update to a version higher than 7.7.0.
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