Spring Boot Cassandra SSL Hostname Verification Failure (pre 4.0.6, 3.5.14, ...)
CVE-2026-40974 Published on April 27, 2026
Spring Boot's Cassandra auto-configuration does not perform hostname verification when establishing an SSL connection to Cassandra. Affected: Spring Boot 4.0.04.0.5 (fix 4.0.6), 3.5.03.5.13 (fix 3.5.14), 3.4.03.4.15 (fix 3.4.16), 3.3.03.3.18 (fix 3.3.19), 2.7.02.7.32 (fix 2.7.33); Cassandra SSL auto-configuration. Versions that are no longer supported are also affected per vendor advisory.
Vulnerability Analysis
Weakness Type
Improper Certificate Validation
The software does not validate, or incorrectly validates, a certificate. When a certificate is invalid or malicious, it might allow an attacker to spoof a trusted entity by interfering in the communication path between the host and client. The software might connect to a malicious host while believing it is a trusted host, or the software might be deceived into accepting spoofed data that appears to originate from a trusted host.
Products Associated with CVE-2026-40974
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Affected Versions
Spring Boot:- Version 4.0.0 and below 4.0.6 is affected.
- Version 3.5.0 and below 3.5.14 is affected.
- Version 3.4.0 and below 3.4.16 is affected.
- Version 3.3.0 and below 3.3.19 is affected.
- Version 2.7.0 and below 2.7.33 is affected.