AIKIDO-2026-736033
spring-data-rest-core is vulnerable to Improper Access Control
43
Medium Risk
This Affects:
spring-data-rest-coreTL;DR
spring-data-rest-core does not preserve the persisted @Version property when merging an HTTP PUT into an immutable aggregate. Mutable types keep identifier and version from storage, but records, Kotlin data classes, and all-args @PersistenceCreator types return the request body and restore only @JsonIgnore properties. An authenticated client can therefore persist a client-supplied version and defeat optimistic locking. The patch restores version from storage for immutable PUT merges.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and a Spring Data REST repository exposes an immutable aggregate with a @Version property over HTTP PUT.
Background info
spring-data-rest-core is vulnerable to Improper Access Control in versions 0.0.1 - 5.0.6 and 5.1.0 - 5.1.0.
How to fix this
Upgrade the org.springframework.data:spring-data-rest-core library to the patch version.
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