diff --git a/.changeset/cached-service-cleanup.md b/.changeset/cached-service-cleanup.md
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+---
+'@backstage/backend-defaults': patch
+---
+
+Fixed a race condition in `CachedUserInfoService` where a failed request could incorrectly evict a newer cache entry for the same token. The error handler now verifies the map entry is still the same promise before deleting it.