CVE-2023-2193

9.1 criticalEPSS 0.6%

Critical (9.1) in mattermost mattermost. EPSS 0.6% chance of exploitation in the next 30 days.

Mattermost fails to invalidate existing authorization codes when deauthorizing an OAuth2 app, allowing an attacker possessing an authorization code to generate an access token.

Severity

CVSS 3.1

9.1 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 48% of CVEs (scores of 2026-10-31)
CWE: CWE-862
Published: 2023-04-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

mattermost:mattermost

References

https://mattermost.com/security-updates/
https://mattermost.com/security-updates/

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