CVE-2026-47878Network attack vector

Unauthenticated data compromise and service interruption via deserialization

Published Aug 27, 2026 · Updated Aug 27, 2026

Unsafe deserialization in Spring Batch 5.2.6 and earlier and 6.0.0 through 6.0.4 allows remote attackers to expose or alter data or interrupt service. DefaultExecutionContextSerializer Base64-decodes a stored execution context and passes the bytes to ObjectInputStream.readObject() without a class allowlist. The vulnerable path is limited to the default JDBC job repository, but Spring has not published how remote attackers place crafted bytes in an execution context.

CVSS severity5.0
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe deserialization in Spring Batch 5.2.6 and earlier and 6.0.0 through 6.0.4 allows remote attackers to expose or alter data or interrupt service. DefaultExecutionContextSerializer Base64-decodes a stored execution context and passes the bytes to ObjectInputStream.readObject() without a class allowlist. The vulnerable path is limited to the default JDBC job repository, but Spring has not published how remote attackers place crafted bytes in an execution context.

The record

CVE
CVE-2026-47878
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
Spring
Product
Spring Batch
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=5.2.6
  2. Affected versionversion=6.0.0 <=6.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Spring · Spring Batchversion=0 <=5.2.6; version=6.0.0 <=6.0.4

Published CVSS scores

5.0SpringCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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