What’s Vulnerable › Vulnerabilities
CVE-2023-2788: Deactivated user can retain access using oauth2 api
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2023-06-16 · updated 2026-06-17
- Weakness: CWE-862
Description
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.
Affected products
- Mattermost App Framework: from 7.1.0 through 7.1.9; from 7.8.0 through 7.8.4; from 7.9.0 through 7.9.3; 7.10.0
References
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