CVE-2023-4107
Incorrect authorization allows a user manager to update a system admin
Mattermost fails to properly validate the requesting user permissions when updating a system admin, allowing a user manager to update a system admin's details such as email, first name and last name.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Incorrect authorization allows a user manager to update a system admin
Mattermost fails to properly validate the requesting user permissions when updating a system admin, allowing a user manager to update a system admin's details such as email, first name and last name.
- Record
CVE-2023-4107- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L - Weakness
- CWE-863
- Updated
- 2026-11-02
EUVDEUVD-2023-2228
Mattermost fails to properly validate the requesting user permissions when updating a system admin, allowing a user manager to update a system admin's details such as email, first name and last name.
- Record
EUVD-2023-2228- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6xjj-v76v-fwpj
Mattermost does not validate requesting user permissions before updating admin details
Mattermost fails to properly validate the requesting user permissions when updating a system admin, allowing a user manager to update a system admin's details such as email, first name and last name.
- Record
GHSA-6xjj-v76v-fwpj- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L - Weakness
- CWE-284, CWE-863
- Updated
- 2026-11-02
NVD
Mattermost fails to properly validate the requesting user permissions when updating a system admin, allowing a user manager to update a system admin's details such as email, first name and last name.
- Record
CVE-2023-4107- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
OSV
Incorrect authorization allows a user manager to update a system admin
Mattermost fails to properly validate the requesting user permissions when updating a system admin, allowing a user manager to update a system admin's details such as email, first name and last name.
- Record
CVE-2023-4107- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L - Weakness
- CWE-863
- Updated
- 2026-11-02
OSVGHSA-6xjj-v76v-fwpj
Mattermost does not validate requesting user permissions before updating admin details
Mattermost fails to properly validate the requesting user permissions when updating a system admin, allowing a user manager to update a system admin's details such as email, first name and last name.
- Record
GHSA-6xjj-v76v-fwpj- CVSS 3.1
- 6.7 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L - Weakness
- CWE-284, CWE-863
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/mattermost/mattermost-server/v6Go |
through 7.8.7 | 7.8.8 |
github.com/mattermost/mattermost-server/v6Go |
7.9.0 to 7.9.5 | 7.9.6 |
github.com/mattermost/mattermost-server/v6Go |
7.10.0 to 7.10.3 | 7.10.4 |
github.com/mattermost/mattermost-server/v6Go |
before 7.8.8 | 7.8.8 |
github.com/mattermost/mattermost-server/v6Go |
7.9.0 up to 7.9.6 | 7.9.6 |
github.com/mattermost/mattermost-server/v6Go |
7.10.0 up to 7.10.4 | 7.10.4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-4107 is a medium vulnerability (CVSS 6.7) in Mattermost, published August 11, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.51%, the 43rd percentile. Fixed in github.com/mattermost/mattermost-server/v6 7.8.8.