Mattermost security advisory (AV25-364)

Serial number: AV25-364
Date: June 23, 2025

On May 21, 2025, Mattermost published security advisories to address vulnerabilities in multiple products. Included was a critical update for the following:

  • Mattermost Server (9.11.x) – versions 9.11.15 and prior
  • Mattermost Server (10.5.x) – versions 10.5.5 and prior
  • Mattermost Server (10.6.x) – versions 10.6.5 and prior
  • Mattermost Server (10.7.x) – versions 10.7.2 and prior
  • Mattermost Server (10.8.x) – versions 10.8.0 and prior

The Cyber Centre encourages users and administrators to review the provided web link and apply the necessary updates.

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