## cve-2026-47881 - MEDIUM - Denial of Service in Spring Batch FlatFileItemReader via Malformed Input File

- 種別: advisory
- 関連技術: spring, java
- CVE: CVE-2026-47881
- 公開日時: 2026-08-20T00:00:00.000Z
- 情報源: Spring Security Advisories (https://spring.io/security/cve-2026-47881)
- パーマリンク: https://vulnpulse.app/items/spring-security-f7a2daf60413

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. This issue affects applications that use DefaultRecordSeparatorPolicy or JsonRecordSeparatorPolicy . The default policy ( SimpleRecordSeparatorPolicy ) is not affected.