What is CVE-2026-47878?

CVE-2026-47878 is a medium-severity vulnerability in Spring Batch, classified under Deserialization of Untrusted Data. CVSS score: 5.6/10. Published 2026-08-27.

How severe is CVE-2026-47878?

Medium severity. CVSS v3 base score is 5.6 out of 10.

Deserialization in Spring Batch

CVE-2026-47878

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

Vulnerability class: Insecure Deserialization

EPSS: 0.002 (15.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

Spring Batch

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

security@vmware.com

Frequently asked questions

What is CVE-2026-47878?: CVE-2026-47878 is a medium-severity vulnerability in Spring Batch, classified under Deserialization of Untrusted Data. CVSS score: 5.6/10. Published 2026-08-27.
How severe is CVE-2026-47878?: Medium severity. CVSS v3 base score is 5.6 out of 10.