CVE-2026-47893 Vmware CVE debrief

Who should care

Organizations using Spring Framework versions 7.0.0 - 7.0.8, 6.2.0 - 6.2.19, 6.1.0 - 6.1.28, 6.0.0 - 6.0.30, 5.3.0 - 5.3.49, or 5.2.25.RELEASE and earlier should prioritize patching to prevent potential information disclosure via WebSocket connections. This includes operators, platform administrators, vulnerability management teams, and security teams responsible for maintaining and securing applications built with Spring Framework within their environments. Assessing the usage of affected versions and implementing compensating controls can help mitigate risks associated with this vulnerability. Regular monitoring and review of WebSocket connection configurations are also recommended to minimize potential exposure. Additionally, verifying the implementation of patches and updates through testing and validation processes is crucial to ensure the security of affected systems. Security teams should track exceptions, retest remediated assets, and close the item only after evidence is documented to confirm the effectiveness of the remediation efforts. This proactive approach can help prevent potential security incidents related to this vulnerability. It is also essential to review and update incident response plans to address potential information disclosure risks associated with this vulnerability. By taking these steps, organizations can enhance their security posture and reduce the likelihood of successful attacks exploiting this vulnerability. Furthermore, organizations should consider implementing additional security measures, such as network segmentation and access controls, to limit the potential impact of a successful attack. By prioritizing patching and implementing these additional security measures, organizations can effectively manage the risks associated with this vulnerability and protect their applications and data. In addition to patching, organizations should also consider conducting regular security audits and vulnerability assessments to identify and address potential security risks. This can help identify and remediate vulnerabilities before they can be exploited by attackers. By taking a proactive and multi-faceted approach to security, can help

Technical summary

A Spring WebFlux application that supports WebSocket connections may expose indirectly sensitive user information by including request headers in an exception reason. This vulnerability affects multiple versions of Spring Framework, including 7.0.0 - 7.0.8, 6.2.0 - 6.2.19, 6.1.0 - 6.1.28, 6.0.0 - 6.0.30, 5.3.0 - 5.3.49, and 5.2.25.RELEASE and earlier. The exposure of sensitive information can occur through exception reasons that include request headers, potentially leading to information disclosure. Organizations using affected versions should assess their exposure and implement patches or mitigations.

Defensive priority

Organizations using affected Spring Framework versions should prioritize patching to prevent potential information disclosure.

Recommended defensive actions

• Inventory and assess Spring Framework usage within the organization
• Apply patches or updates to affected Spring Framework versions
• Implement compensating controls to monitor and limit sensitive information exposure
• Review and update WebSocket connection configurations to minimize risk
• 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 record indicates that a Spring WebFlux application supporting WebSocket connections may expose sensitive user information indirectly by including request headers in an exception reason. Affected versions include Spring Framework 7.0.0 - 7.0.8, 6.2.0 - 6.2.19, 6.1.0 - 6.1.28, 6.0.0 - 6.0.30, 5.3.0 - 5.3.49, and 5.2.25.RELEASE and earlier.

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.