CVE-2026-47881

Denial of Service in Spring Batch FlatFileItemReader via Malformed Input File

State: Published
Severity: 5.9 Medium
Published: Aug 27, 2026
Updated: Aug 27, 2026
Reserved: May 20, 2026

Description

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

Scores

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

Weaknesses

CWE-400 Uncontrolled Resource Consumption

Affected Products

Product	Versions
Spring BatchSpring	6.0.0 through 6.0.4Affected 5.2.0 through 5.2.6Affected 4.3.0 through 4.3.13Affected

References

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

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