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Multiples vulnérabilités dans Mattermost Server (23 septembre 2026)

Publisher update

The brief

CERT-FR has grouped several Mattermost Server flaws that can disrupt service remotely or expose confidential data. The affected branches are 11.7 before 11.7.11, 11.8 before 11.8.6, 11.9 before 11.9.2 and 11.10 before 11.10.2. Its September 23 advisory links Mattermost's security-update notices for the corresponding fixes and identifies three associated CVEs.

AI-assisted brief

Source CERT-FR / ANSSIEtalab Open Licence v2.0 · Source material adapted into an original NexusTechWire brief. Original source license applies. See the attributed original source for its latest revision date. Reuse does not imply publisher endorsement.

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