Vulnerability · Published Aug 27, 2026 · Assigned by vmware
CVE-2026-47878Unsafe Java deserialization in DefaultExecutionContextSerializer without class allowlist
Medium 5.6
In plain English
A medium-severity unsafe deserialization in Spring Batch from Spring. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).
Severity (CVSS 3.1)5.6Medium
Exploit odds (30 days)0.4%top 71.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Spring | Spring Batch | 6.0.0 – through 6.0.40 – through 5.2.6 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L