Memory leak in Spring Framework - CVE-2026-47888

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Main Vulnerability Database Vulnerabilities #VU146220

Memory leak in Spring Framework - CVE-2026-47888

Published: August 28, 2026


Vulnerability identifier: #VU146220
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-47888
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper resource shutdown or release in RSocketMessageHandler when processing a malformed SETUP frame. A remote attacker can send a specially crafted SETUP frame to cause a denial of service.


Affected software

Spring Framework
Library Support for Spring

How to mitigate CVE-2026-47888

Install security update from vendor's website.

Spring Framework - addressed in versions 5.2.26, 5.3.50, 6.0.31, 6.1.29, 6.2.20, 7.0.8.1, 7.0.9
Library Support for Spring - update to 3.5.19

External References

Related Security Bulletins