CERT-FR: Unspecified vulnerability in Mattermost Server 11.7.x before 11.7.12 (MMSA-2026-00709)
CERT-FR advisory CERTFR-2026-AVI-1338 reports a vulnerability in Mattermost Server that lets an attacker cause a security issue the vendor has not specified. It affects Mattermost Server 11.7.x versions earlier than 11.7.12. The advisory is based on Mattermost security bulletin MMSA-2026-00709 of 16 October 2026. It gives no CVE identifie…