High severity · published Aug 27, 2026
CVE-2026-47878
Unsafe Java deserialization in DefaultExecutionContextSerializer without class allowlist
7.3
CVSS
0.4%
EPSS
No
On KEV
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
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SB
Spring Batch · Spring
6.0.0 through 6.0.4; through 5.2.6 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47878
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-47878
Vendor Advisory
https://spring.io/security/cve-2026-47878
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