Improper validation of certificate with host mismatch in Spring Boot - CVE-2026-40974

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Main Vulnerability Database Vulnerabilities #VU128233

Improper validation of certificate with host mismatch in Spring Boot - CVE-2026-40974

Published: April 27, 2026


Vulnerability identifier: #VU128233
CSH Severity: Medium
CVSS v4: 2.3 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-40974
CWE-ID: CWE-297
Exploitation vector: Adjecent network
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise the confidentiality, integrity, and availability of data in transit.

The vulnerability exists due to improper certificate validation in Cassandra SSL auto-configuration when establishing an SSL connection to Cassandra. A remote attacker can intercept a connection on the local network to compromise the confidentiality, integrity, and availability of data in transit.


Affected software

Spring Boot
Library Support for Spring
IBM Sterling Connect:Direct Web Services
IBM Sterling Control Center
IBM InfoSphere Information Server

How to mitigate CVE-2026-40974

Install security update from vendor's website.

Spring Boot - addressed in versions 2.7.33, 3.3.19, 3.4.16, 3.5.14, 4.0.6
Library Support for Spring - update to 3.4.18
IBM Sterling Connect:Direct Web Services - addressed in versions 6.3.0.19, 6.4.0.8
IBM Sterling Control Center - addressed in versions 6.3.1.0.9, 6.4.1.0.3, 6.4.2.0.4
IBM InfoSphere Information Server - update to 11.7.1.6 Service pack 3

External References

Related Security Bulletins