CVE-2026-47888

Spring Framework Memory Leak via SETUP Frame in RSocketMessageHandler

State: Published
Severity: 7.5 High
Published: Aug 27, 2026
Updated: Aug 27, 2026
Reserved: May 20, 2026

Description

A Spring RSocket application is exposed to a memory leak via a malformed SETUP frame. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spring Framework 5.3.0 - 5.3.49 Spring Framework 5.2.0.RELEASE - 5.2.25.RELEASE

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-401 Missing Release of Memory after Effective Lifetime

Affected Products

Product	Versions
Spring FrameworkSpring	7.0.0 through 7.0.8Affected 6.2.0 through 6.2.19Affected 6.1.0 through 6.1.28Affected 6.0.0 through 6.0.30Affected 5.3.0 through 5.3.49Affected 5.2.0.RELEASE through 5.2.25.RELEASEAffected

References

https://spring.io/security/cve-2026-47888

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