CVE-2026-47878

Unsafe Java deserialization in DefaultExecutionContextSerializer without class allowlist

State: Published
Severity: 5.6 Medium
Published: Aug 27, 2026
Updated: Aug 27, 2026
Reserved: May 20, 2026

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

Scores

CVSS	Score	Vector	Source
3.1	5.6 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L	vmware

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
Spring BatchSpring	6.0.0 through 6.0.4Affected 5.2.6 and earlierAffected

References

https://spring.io/security/cve-2026-47878

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