PT-2026-52837 · Mattermost · Mattermost
Published
2026-06-26
·
Updated
2026-06-26
·
CVE-2026-9699
CVSS v3.1
6.8
Medium
| Vector | AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N |
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
Fix
Insertion into Log File
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Weakness Enumeration
Related Identifiers
Affected Products
Mattermost