v1.28.4

What's Changed

Potential Breaking Change

If using authorization with replication setup, set system.disableStreamingAuthorizer dynamic config to true to opt out from changes in this release and avoid replication traffic connection errors. Check the linked CVE for implications of opting out.

Security

• Addresses CVE-2026-5724, MEDIUM

Full Changelog: https://github.com/temporalio/temporal/compare/v1.28.3...v1.28.4

Helpful links to get you started with Temporal

Temporal Docs Server Helm Chart

Docker images for this release (use the tag 1.28.4)

Server Server With Auto Setup (what is Auto-Setup?) Admin-Tools