CVE-2023-2788 json
Deactivated user can retain access using oauth2 api
published 2023-06-16 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-34244
- cvss
- 6.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 43%
- public exploits
- 0
- none known
Summary
Mattermost fails to check if an admin user account active after an oauth2 flow is started, allowing an attacker with admin privileges to retain persistent access to Mattermost by obtaining an oauth2 access token while the attacker's account is deactivated.
Patch / fix
- Mattermost Mattermost 7.1.10, 7.8.5, 7.9.4, 7.10.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 23 mo ago
Exploit prediction
0.50% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.2 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:L |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N |
Affected products
- Mattermost Mattermost
Classification
References
-
mattermost.com
/security-updates/
vendor-advisory
Sources
- CVE List CVE-2023-2788
- NVD CVE-2023-2788
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