CVE-2026-9699
MEDIUM
NVD
CVSS Score
6.8
Severity
MEDIUM
Published
Jun 26, 2026
Vendor
unknown
Description
Mattermost Plugins versions <=11.6 10.18.11 11.3.6 11.6.5.0 fail to sanitize error responses from the OpenAI API before logging, which allows a user with access to server logs or support packets to obtain a valid or partially reconstructable OpenAI API key via inspection of mattermost.log entries generated during authentication failures. Mattermost Advisory ID: MMSA-2026-00609