Backstage v1.53.0: Three Breaking Changes in Auth, Config, and MCP

Mon, 20 Jul 2026 14:01:18 +0000

Platform/SRE — Plan: Teams running Backstage need to audit OAuth redirect URI allowlist patterns (wildcards no longer cross host/path boundaries), validate config schema imports that may now fail to load, and migrate any MCP clients off the removed SSE transport to the Streamable HTTP endpoint before upgrading to v1.53.0.
CI/CD — Skip
Leader — Skip
Signals: deprecation mentioned (no explicit date found)

Internal-Developer-Platform on CuraDevOps