Improper Resource Shutdown or Release in Spring Framework - CVE-2026-22740
Published: April 21, 2026
Vulnerability identifier: #VU126708
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-22740
CWE-ID: CWE-404
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper resource management in multipart request handling in WebFlux when processing multipart requests. A remote user can send a series of multipart requests to consume available disk space.
Temp files created for parts larger than 10 K may remain undeleted after request processing under some circumstances.
Affected software
Spring Framework
Db2 Developer Extension
IBM Sterling Connect:Direct Web Services
Library Support for Spring
Db2 Developer Extension
IBM Sterling Connect:Direct Web Services
Library Support for Spring
How to mitigate CVE-2026-22740
Install security update from vendor's website.
Spring Framework - addressed in versions 5.3.48, 6.1.27, 6.2.18, 7.0.7
Db2 Developer Extension - update to 1.1.2
IBM Sterling Connect:Direct Web Services - addressed in versions 6.3.0.19, 6.4.0.8
Library Support for Spring - update to 2.7.38
Db2 Developer Extension - update to 1.1.2
IBM Sterling Connect:Direct Web Services - addressed in versions 6.3.0.19, 6.4.0.8
Library Support for Spring - update to 2.7.38