CVE-2023-2515
Privilege escalation to system admin via personal access tokens
Mattermost fails to restrict a user with permissions to edit other users and to create personal access tokens from elevating their privileges to system admin
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
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Privilege escalation to system admin via personal access tokens
Mattermost fails to restrict a user with permissions to edit other users and to create personal access tokens from elevating their privileges to system admin
- Record
CVE-2023-2515- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-863
- Updated
- 2026-11-02
EUVDEUVD-2023-1492
Mattermost fails to restrict a user with permissions to edit other users and to create personal access tokens from elevating their privileges to system admin
- Record
EUVD-2023-1492- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-7g2v-2frm-rg94
Mattermost Incorrect Authorization vulnerability
Mattermost fails to restrict a user with permissions to edit other users and to create personal access tokens from elevating their privileges to system admin
- Record
GHSA-7g2v-2frm-rg94- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-863
- Updated
- 2026-11-02
NVD
Mattermost fails to restrict a user with permissions to edit other users and to create personal access tokens from elevating their privileges to system admin
- Record
CVE-2023-2515- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-863
- Updated
- 2026-11-02
OSV
Privilege escalation to system admin via personal access tokens
Mattermost fails to restrict a user with permissions to edit other users and to create personal access tokens from elevating their privileges to system admin
- Record
CVE-2023-2515- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-863
- Updated
- 2026-11-02
OSVGHSA-7g2v-2frm-rg94
Mattermost Incorrect Authorization vulnerability
Mattermost fails to restrict a user with permissions to edit other users and to create personal access tokens from elevating their privileges to system admin
- Record
GHSA-7g2v-2frm-rg94- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-863
- Updated
- 2026-11-02
OSVBIT-mattermost-2023-2515 No score
Mattermost fails to restrict a user with permissions to edit other users and to create personal access tokens from elevating their privileges to system admin
- Record
BIT-mattermost-2023-2515- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/mattermost/mattermost-server/v6Go |
before 7.1.8 | 7.1.8 |
github.com/mattermost/mattermost-server/v6Go |
7.2.0 up to 7.7.4 | 7.7.4 |
github.com/mattermost/mattermost-server/v6Go |
7.8.0 up to 7.8.3 | 7.8.3 |
github.com/mattermost/mattermost-server/v6Go |
7.9.0 up to 7.9.2 | 7.9.2 |
mattermostBitnami |
before 7.1.8, 7.2.0 up to 7.7.4, 7.8.0 up to 7.8.3, 7.9.0 up to 7.9.2 | 7.1.87.7.47.8.37.9.2 |
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-2023-2515 is a medium vulnerability (CVSS 4.7) in Mattermost, published May 12, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.47%, the 40th percentile. Fixed in github.com/mattermost/mattermost-server/v6 7.1.8.