AIKIDO-2026-908402
spring-batch-core is vulnerable to Deserialization of Untrusted Data
56
Medium Risk
This Affects:
spring-batch-coreTL;DR
spring-batch-core JobParameterDeserializer does not enforce the trusted-type allow-list used by Jackson2ExecutionContextStringSerializer. An attacker who can write untrusted job-repository data can instantiate unexpected types, including known Jackson gadget chains. That can lead to code execution during execution-context deserialization. The patch applies the allow-list to job parameter types.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and Jackson2ExecutionContextStringSerializer deserializes job execution context from an untrusted job repository.
Background info
spring-batch-core is vulnerable to Deserialization of Untrusted Data in versions 5.2.0 - 6.0.4.
How to fix this
Upgrade the org.springframework.batch:spring-batch-core library to the patch version.
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