CVE-2026-9699

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

Score
CVSS 3.1 6.8 Medium
Status
Awaiting Analysis - responsibledisclosure@mattermost.com
Published
2026-06-26
Last modified
2026-06-26
Weaknesses
CWE-532

Affected products

References

 
 
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