Is CVE-2026-47878 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-47878?

CVE-2026-47878 has a CVSS v3 severity of MEDIUM (5.6).

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CVE-2026-47878

Description

DefaultExecutionContextSerializer, used by default in Spring Batch's JDBC job repository, passes Base64-decoded bytes directly to ObjectInputStream.readObject() without an ObjectInputFilter that restricts types to a trusted class allowlist. Spring Batch 6.0.0 - 6.0.4 Spring Batch 5.2.6 and earlier