CVE-2026-47881 Spring CVE debrief

Who should care

Organizations using Spring Batch, particularly those with batch jobs handling large files or sensitive data, should be aware of this vulnerability. This includes operators managing batch jobs, platform administrators, vulnerability management teams, and security teams responsible for ensuring the security and integrity of batch processing environments. These teams need to assess their exposure, apply patches, and monitor for potential impacts on their systems and data security. Additionally, organizations should review compensating controls and implement monitoring to detect unusual activity in batch jobs that could indicate exploitation attempts. This may involve coordination with developers, IT operations, and security teams to ensure comprehensive mitigation and response strategies are in place. The vulnerability's impact could lead to denial-of-service attacks, making it critical for affected organizations to prioritize patching and review their security measures to protect against potential threats. This requires a proactive approach to vulnerability management, including timely patching, enhanced monitoring, and preparedness for incident response if exploitation occurs. By taking these steps, organizations can reduce the risk associated with this vulnerability and protect their batch processing environments from potential attacks. Organizations should also consider the potential for data breaches or disruptions to critical business processes if the vulnerability is exploited. Therefore, it is essential to treat this vulnerability with a high level of urgency and to allocate necessary resources for mitigation and remediation efforts. The involvement of multiple teams within an organization is crucial for effective management and mitigation of this vulnerability. This includes ensuring that all relevant stakeholders are informed about the potential risks and are working together to implement appropriate security measures. Effective communication and collaboration are key to successfully addressing the challenges posed by this vulnerability. In addition to technical measures, organizations should also focus on enhancing their incident response capabilities to

Technical summary

A specially crafted input file could exploit the way Spring Batch's FlatFileItemReader assembles multi-line records to consume excessive CPU time and memory, causing the batch job to stall or run out of memory. Affected versions include Spring Batch 6.0.0 - 6.0.4, 5.2.0 - 5.2.6, and 4.3.0 - 4.3.13. The vulnerability is related to how multi-line records are handled, particularly in CSV files with embedded newlines.

Defensive priority

Organizations using Spring Batch should prioritize patching to prevent potential denial-of-service attacks.

Recommended defensive actions

• Apply patches for affected Spring Batch versions
• Restrict access to sensitive batch jobs
• Monitor batch job performance
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record indicates that a specially crafted input file could exploit the way Spring Batch's FlatFileItemReader assembles multi-line records to consume excessive CPU time and memory. Affected versions include Spring Batch 6.0.0 - 6.0.4, 5.2.0 - 5.2.6, and 4.3.0 - 4.3.13. To verify, defenders should review batch job configurations, monitor for unusual resource consumption, and ensure patching is applied according to vendor guidance.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.