CVSS 2.7 (low) · published 2026-10-26
Mattermost versions 11.7.x <= 11.7.10 fail to apply outbound internal-connection filtering to the OpenID discovery endpoint request which allows a System Administrator to determine whether internal addresses and ports are reachable from the server via an unauthenticated login request that triggers the discovery fetch.. Mattermost Advisory ID: MMSA-2026-00774
Affected products (NVD): mattermost mattermost_server
Fixed in (NVD): 11.7.11
Weakness: CWE-918
Source: NVD CVE-2026-93848
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