Privilege escalation to system admin via personal access tokens
Priority LOW 38CWE-863Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-863.
Summary
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
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00469 40th percentileScored 2026-11-07
Fix Fixed Mattermost (Mattermost): 7.1.8, 7.7.4, 7.8.3 +1github.com/mattermost/mattermost-server/v6 (Go): 7.1.8, 7.7.4, 7.8.3 +1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Mattermost | Mattermost | up to 7.1.7; up to 7.7.3; up to 7.8.2; up to 7.9.1 | 7.1.8, 7.7.4, 7.8.3, 7.9.2 | Patch available | CNA |
| — | github.com/mattermost/mattermost-server/v6 (Go) | before 7.1.8 | 7.1.8 | Patch available | GHSA-7g2v-2frm-rg94 |
| — | github.com/mattermost/mattermost-server/v6 (Go) | 7.2.0 to before 7.7.4 | 7.7.4 | Patch available | GHSA-7g2v-2frm-rg94 |
| — | github.com/mattermost/mattermost-server/v6 (Go) | 7.8.0 to before 7.8.3 | 7.8.3 | Patch available | GHSA-7g2v-2frm-rg94 |
| — | github.com/mattermost/mattermost-server/v6 (Go) | 7.9.0 to before 7.9.2 | 7.9.2 | Patch available | GHSA-7g2v-2frm-rg94 |
- Mattermost VendorMattermost Affected up to 7.1.7; up to 7.7.3; up to 7.8.2; up to 7.9.1 Fixed in 7.1.8, 7.7.4, 7.8.3, 7.9.2 Patch available CNA
- github.com/mattermost/mattermost-server/v6 (Go) Vendor— Affected before 7.1.8 Fixed in 7.1.8 Patch available GHSA-7g2v-2frm-rg94
- github.com/mattermost/mattermost-server/v6 (Go) Vendor— Affected 7.2.0 to before 7.7.4 Fixed in 7.7.4 Patch available GHSA-7g2v-2frm-rg94
- github.com/mattermost/mattermost-server/v6 (Go) Vendor— Affected 7.8.0 to before 7.8.3 Fixed in 7.8.3 Patch available GHSA-7g2v-2frm-rg94
- github.com/mattermost/mattermost-server/v6 (Go) Vendor— Affected 7.9.0 to before 7.9.2 Fixed in 7.9.2 Patch available GHSA-7g2v-2frm-rg94
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | before 7.1.8; 7.2.0 to before 7.7.4; 7.8.0 to before 7.8.3; 7.9.0 to before 7.9.2 | Vulnerable | Mattermost |
- cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* Versions before 7.1.8; 7.2.0 to before 7.7.4; 7.8.0 to before 7.8.3; 7.9.0 to before 7.9.2 Vulnerable ·Mattermost
Remediation
- Fix · CNA Mattermost (Mattermost) Fixed in 7.1.8, 7.7.4, 7.8.3, 7.9.2
- Fix · GHSA-7g2v-2frm-rg94 github.com/mattermost/mattermost-server/v6 (Go) Fixed in 7.1.8 Advisory →
- Fix · GHSA-7g2v-2frm-rg94 github.com/mattermost/mattermost-server/v6 (Go) Fixed in 7.7.4 Advisory →
- Fix · GHSA-7g2v-2frm-rg94 github.com/mattermost/mattermost-server/v6 (Go) Fixed in 7.8.3 Advisory →
- Fix · GHSA-7g2v-2frm-rg94 github.com/mattermost/mattermost-server/v6 (Go) Fixed in 7.9.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-2515
- 2026-10-03 Alias added: GHSA-7g2v-2frm-rg94
References
More Mattermost Server vulnerabilities
- TI-2025-18933 Arbitrary file read in Mattermost Boards via import & export board archive CVSS 3.1CRITICAL 9.9
- TI-2025-04465 Path Traversal Leading to RCE by Any Authenticated Mattermost User CVSS 3.1CRITICAL 9.9
- TI-2017-14068 An issue was discovered in Mattermost Server before 3.6.2. CVSS 3.1CRITICAL 9.8
- TI-2017-14060 An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. CVSS 3.1CRITICAL 9.8
- TI-2017-14048 An issue was discovered in Mattermost Server before 4.1.0, 4.0.4, and 3.10.3. CVSS 3.1CRITICAL 9.8
- TI-2025-14360 Arbitrary file read via block duplication in Mattermost Boards CVSS 3.1CRITICAL 9.9
Sources
- CVE-2023-2515 · CVE Program
- CVE-2023-2515 · NVD
- FIRST EPSS
- GHSA-7g2v-2frm-rg94 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences