Security AlertMedium
Canada’s Cyber Centre warns on Mattermost and n8n security issues
Oct 29, 2026 · Summarized by Fundy Tech from 2 sources
The 30-second version
The Cyber Centre has posted advisories for Mattermost and n8n. The notice says users and administrators should review the links and apply updates.
Key points
- Advisories are AV26-1104 for Mattermost and AV26-1103 for n8n.
- The source text gives no vulnerability details.
- The Cyber Centre says to review links and update when possible.
Why it matters
If your team uses either platform, check vendor guidance now. Even brief service issues or account problems can disrupt collaboration and customer work.
Who’s affected: Mattermost and n8n users
What to do
- Review the Cyber Centre advisories.
- Check vendor patches for Mattermost and n8n.
- Apply updates when they are available.
Original reporting
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