CVE-2026-47881 PUBLISHED

Denial of Service in Spring Batch FlatFileItemReader via Malformed Input File

Assigner: vmware
Reserved: 20.05.2026 Published: 27.08.2026 Updated: 27.08.2026

Spring Batch's FlatFileItemReader supports files where a single logical record spans multiple physical lines — for example, a CSV field that contains embedded newlines wrapped in quotes. A specially crafted input file could exploit the way the reader assembles those multi-line records to consume excessive CPU time and memory, causing the batch job to stall or run out of memory. Spring Batch 6.0.0 - 6.0.4 Spring Batch 5.2.0 - 5.2.6 Spring Batch 4.3.0 - 4.3.13

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 5.9

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Spring
Product	Spring Batch
Versions	Default: unaffected affected from 6.0.0 to 6.0.4 (incl.) affected from 5.2.0 to 5.2.6 (incl.) affected from 4.3.0 to 4.3.13 (incl.)

References

https://spring.io/security/cve-2026-47881

Problem Types

CWE-400 Uncontrolled Resource Consumption CWE

Impacts

Spring Batch's FlatFileItemReader supports files where a single logical record spans multiple physical lines — for example, a CSV field that contains embedded newlines wrapped in quotes. A specially crafted input file could exploit the way the reader assembles those multi-line records to consume excessive CPU time and memory, causing the batch job to stall or run out of memory.