Memory leak in Spring Framework - CVE-2026-41840

Vulnerability identifier: #VU146166

CSH Severity: Medium

CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-41840

CWE-ID: CWE-401

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

The vulnerability exists due to memory leakage in multipart request processing in Spring WebFlux when processing multipart requests. A remote attacker can send malicious multipart requests to cause a denial of service.

The issue affects applications that implement a web endpoint that receives multipart requests.

Spring Framework
Db2 Developer Extension
Maximo Application Suite - Monitor Component
IBM Sterling B2B Integrator
IBM Sterling File Gateway

Install security update from vendor's website.

Spring Framework - addressed in versions 5.3.49, 6.1.28, 6.2.18.1, 6.2.19, 7.0.7.1, 7.0.8
Db2 Developer Extension - update to 1.2.0
IBM Sterling B2B Integrator - addressed in versions 6.2.1.2.1, 6.2.2.1.1
IBM Sterling File Gateway - addressed in versions 6.2.1.2.1, 6.2.2.1.1
Maximo Application Suite - Monitor Component - addressed in versions 9.0.25, 9.1.15, 9.2.4

• https://spring.io/security/cve-2026-41840

• Multiple vulnerabilities in Spring Framework
• Multiple vulnerabilities in IBM Sterling B2B Integrator and IBM Sterling File Gateway
• Multiple vulnerabilities in IBM Db2 Developer Extension
• Multiple vulnerabilities in IBM Maximo Application Suite - Monitor Component