Mattermost | open source messaging platform
that enables secure team collaboration
Latest Product Updates and Feature Enhancements on Mattermost
Endor Patches | CVE-2026-4858, Mattermost has a Path Traversal issue
Mattermost has identified a path traversal vulnerability (CVE-2026-4858) affecting versions 11.6.x, 11.5.x, 11.4.x, and 10.11.x. This issue allows malicious users to exploit the integration URL for u...nauthorized API access. A fix is available in updated versions 11.6.1, 11.5.3, 11.4.5, and 10.11.15.
Mattermost identified multiple security vulnerabilities in its products, including Mattermost Server, Plugins, and Google Drive Plugin. These vulnerabilities range from path traversal issues to impro...per validation of user permissions, potentially allowing unauthorized access and data exfiltration. Users are advised to update to the latest versions to mitigate these risks.
Mattermost, archTIS, Arqit, and Whitespace Deliver Integrated ...
Mattermost, archTIS, Arqit, and Whitespace have collaborated to deliver an integrated operational collaboration capability for defence ministries and NATO allies. This unified environment combines se...cure collaboration, data-centric policy enforcement, cryptographic trust, and AI-powered learning, enhancing real-time decision-making and mission execution in complex operational settings. The joint capability will be showcased at AFCEA TechNet International and Eurosatory.
Mattermost Launches Joint Development Program for Sovereign Confluence Successor.
Mattermost has launched a Joint Development Program to co-develop Mattermost Docs, a self-hosted successor to Confluence, aimed at defense and critical infrastructure organizations. The program addre...sses the end-of-life of Atlassian's on-premise Confluence options, offering a secure, on-premise wiki integrated with messaging and AI for air-gapped environments. Participants will shape the solution to meet advanced security needs.
Mattermost Expands Commitment to Allied Defense of the Pacific; Launches "Mission Operations for Microsoft" and Establishes Japan Subsidiary
Mattermost has expanded its operations in the Asia-Pacific region by launching a new subsidiary, Mattermost Japan KK, and introducing "Mattermost Mission Operations for Microsoft." This solution, int...egrated with Microsoft Azure Local, enhances secure collaboration and AI capabilities for defense operations. It supports mobile security, deep integration with Microsoft 365, and cyber resilience, addressing the need for operational sovereignty in contested environments.
Mattermost Unveils New Free Tier for Collaboration Platform - ExecutiveBiz
Mattermost announced Mattermost Entry, a free, fully-featured evaluation tier for its Intelligent Mission Environment (IME). This self-hosted suite of toolsincluding workflow automation, project mana...gement, messaging, audio/screen sharing, and AI agentsreplaces the prior basic messaging-only free offering.
Mattermost Launches Free Entry Tier: Sovereign Self-Hosted Collaboration to Fortify Data ...
Mattermost has introduced "Mattermost Entry," a free, self-hosted evaluation tier of its Intelligent Mission Environment (IME) platform. This offering provides governments and critical infrastructure... with secure, private workflows, including project management and AI agents, without third-party access. It supports rapid deployment and evaluation, offering full data sovereignty and operational control. Available on Microsoft Azure and Oracle Cloud, it aims to enhance cybersecurity and operational resilience.
Securing Finland's Future: Addressing the Evolving Challenges of National Security
Mattermost has launched its Intelligent Mission Environment in Finland, a secure collaboration platform tailored for the country's defense, intelligence, and critical infrastructure sectors. This pla...tform supports secure workflows, AI integration, and NATO interoperability, addressing Finland's unique security challenges amid increased defense spending and modernization efforts.
Strategic Partnerships and Integrations of Mattermost
archTIS, Arqit, Whitespace
Mattermost, archTIS, Arqit, and Whitespace Collaborate to Deliver ...
Mattermost, archTIS, Arqit, and Whitespace have collaborated to create an integrated command-and-control platform for defense ministries and NATO allies. This platform combines secure collaboration, ...data-centric policy enforcement, cryptographic trust, and AI-powered decision support. It aims to enhance coordination, policy enforcement, and learning in complex defense environments, showcasing its capabilities at AFCEA TechNet International and Eurosatory.
Mattermost Power Operational Collaboration for Locked Shields 2026, the World's Largest ...
Mattermost is actively contributing to Locked Shields 2026, a major cyber defense exercise organized by the NATO Cooperative Cyber Defence Centre of Excellence. As a sponsor and contributor, Mattermo...st is developing Digital Forensics and Incident Response challenges and new strategic scenarios, enhancing the exercise's operational complexity. This involvement underscores Mattermost's commitment to secure collaboration in high-stakes environments.
Mattermost Powers Operational Collaboration for Locked Shields 2026 ...
Mattermost sponsors and contributes to Locked Shields 2026, a major cyber defence exercise by NATO CCDCOE. The company enhances the event with Digital Forensics and Incident Response challenges and n...ew strategic scenarios, showcasing its secure collaboration platform's role in cyber defence. This involvement underscores Mattermost's commitment to operational readiness and innovation in high-stakes environments.
Leadership and Executive Team Updates at Mattermost
Mattermost Product Executive, Jason Blais, Named to AFCEA International Board of Directors
Jason Blais, VP of Product and NATO Alliances at Mattermost, has been appointed to the AFCEA International Board of Directors. His role will focus on enhancing collaboration across Europe, North Amer...ica, and the Indo-Pacific, leveraging his expertise in secure, interoperable technology for defense and cybersecurity.
Mattermost Appoints Lane McFarland as First Chief People Officer to Scale Global Workforce for Next Phase of Growth
Mattermost has appointed Lane McFarland as its first Chief People Officer. McFarland will lead the global people strategy and drive AI transformation to support Mattermost's growth. With over 15 year...s of experience, he aims to enhance organizational design and talent systems, aligning them with business outcomes.
Mattermost Appoints Adam Enterkin as Chief Revenue Officer to ...
Mattermost has appointed Adam Enterkin as Chief Revenue Officer to drive global revenue growth and expand its presence in national security and mission-critical markets. Enterkin, with a strong backg...round in secure communications and Zero Trust architectures, aims to enhance Mattermost's strategic direction and global alliances.
Mattermost Appoints Matt Mandrgoc as Vice President of Federal to Expand Public Sector Growth and Mission Enablement
Mattermost has appointed Matt Mandrgoc as Vice President of Federal to lead its federal growth strategy. Mandrgoc, with extensive experience from Cisco and Zoom, will focus on expanding partnerships ...and contract opportunities with defense, civilian, and intelligence agencies. This move aligns with Mattermost's efforts to enhance secure collaboration and support national security missions.
Mattermost Appoints Matt Mandrgoc as Vice President of Federal to ...
Mattermost has appointed Matt Mandrgoc as Vice President of Federal to enhance its public sector growth. With over 25 years of federal market experience, Mandrgoc will lead Mattermost's federal strat...egy, focusing on partnerships and government modernization. His role aims to expand Mattermost's influence in defense and intelligence sectors, leveraging his expertise from Cisco and Zoom.
