Portainer CE 2.45.3 LTS Released: Security Fixes & How to Update

On October 22, 2026, the Portainer team released the third maintenance update to the current Long Term Support line, moving from 2.45.2 LTS to 2.45.3 LTS. This is a classic LTS patch release: focused on security hardening, dependency updates, and small stability improvements rather than big new features. For anyone running Portainer on a Synology NAS or UGREEN NAS (or any other Docker host), it is a straightforward and recommended update. This release removes trust in TLS certificates issued by eMudhra (emSign) after eight of its intermediate CAs were compromised, so check your OAuth/OIDC, LDAPS, registry and Git connections before you upgrade. Also, this new version fixes the issue where GitOps sources start a new poll while the previous one is still running, piling up overlapping redeploys on slow repositories.

🚀Portainer 2.45.3 Full Changelog

📋Install Portainer 2.45.3 On Your Synology NAS

📋UGREEN NAS: How to Install Portainer Without SSH

📋How to Update Portainer to Version 2.45.3

📋How to Activate Dark Mode in Portainer 2.45.3

📋How to Change Portainer Logo With Your Own Logo in Portainer 2.45.3

📋How to Update Your Docker Containers Using Portainer 2.45.3

📋How to Clean Docker Using Portainer 2.45.3

📋How to Backup Portainer 2.45.3

📋How to Reset Portainer 2.45.3 Password

📋How to Increase Portainer 2.45.3 Session Lifetime

📋How to Change Restart Policy in Portainer 2.45.3 

⚡How to Move Your Docker Containers From Portainer to Dockhand

What is Portainer? Portainer is a really awesome web UI for Docker. Portainer is a lightweight management UI which allows you to easily manage your different Docker environments (Docker hosts or Swarm clusters). Portainer is meant to be as simple to deploy as it is to use thanks to its user-friendly interface.