CVE-2026-47861 Spring CVE debrief

Who should care

Security teams and administrators responsible for Spring Integration installations should be aware of this vulnerability and take necessary defensive actions to prevent exploitation. This includes reviewing and restricting UDP traffic, implementing compensating controls such as network segmentation and monitoring, and applying vendor patches or updates. Additionally, administrators should inventory and verify affected Spring Integration versions to ensure that they are not exposed to this vulnerability. Affected operators, platforms, and security teams should prioritize defensive actions due to the potential impact on network security. Vulnerability management and security teams should track exceptions, retest remediated assets, and close the item only after evidence is documented. Asset inventory and monitoring teams should review relevant monitoring, detection, and logs for exposed assets that need extra review. Rollback and change window management teams should plan vendor-supported updates or mitigations through normal change control where exposure is confirmed. Source tracking and exposure review teams should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. Compensating controls and monitoring teams should check for exposed systems while remediation is scheduled and verified. These teams should work together to ensure that the vulnerability is properly mitigated and that the risk is reduced to an acceptable level. The CVE-2026-47861 vulnerability has a CVSS score of 6.3 and a medium severity rating, indicating that it is a significant threat to network security. Therefore, it is essential that affected teams take immediate action to mitigate this vulnerability and prevent potential attacks. The vulnerability can be mitigated by applying vendor patches or updates, implementing compensating controls, and reviewing and restricting UDP traffic. By taking these steps, administrators can help prevent exploitation and reduce the risk of a successful attack. In addition to these technical measures, it is also essential that security teams and administrators communicate effectively with stakeholders to,

Technical summary

CVE-2026-47861 is a medium-severity vulnerability in Spring Integration that allows an unauthenticated remote attacker to cause the server to emit an outbound UDP datagram to an arbitrary internal or external host and port by sending a single UDP packet to a Spring Integration UDP inbound adapter. The vulnerability affects multiple versions of Spring Integration, including 5.5.21 and earlier, 6.4.0-6.4.12, 6.5.0-6.5.10, 7.0.0-7.0.5, and 7.1.0. To mitigate this vulnerability, administrators should inventory and verify affected Spring Integration versions, apply vendor patches or updates, implement compensating controls such as network segmentation and monitoring, and review and restrict UDP traffic.

Defensive priority

Medium-priority defensive actions are recommended due to the CVSS score of 6.3 and potential impact on network security.

Recommended defensive actions

• Inventory and verify affected Spring Integration versions
• Apply vendor patches or updates
• Implement compensating controls, such as network segmentation and monitoring
• Review and restrict UDP traffic
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Evidence notes

The CVE-2026-47861 vulnerability affects multiple versions of Spring Integration, including 5.5.21 and earlier, 6.4.0-6.4.12, 6.5.0-6.5.10, 7.0.0-7.0.5, and 7.1.0. An unauthenticated remote attacker can send a single UDP packet to cause the server to emit an outbound UDP datagram to an arbitrary internal or external host and port.

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.