Medium severity6.8NVD Advisory· Published Jun 26, 2026· Updated Jun 26, 2026
CVE-2026-9699
CVE-2026-9699
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
Affected products
1- Range: <=11.6 10.18.11, <=11.3.6, <=11.6.5.0
Patches
Vulnerability mechanics
References
1News mentions
0No linked articles in our index yet.