Spring Boot CVE-2026-40974

MEDIUM

Improper Certificate Validation (CWE-295)

2026-04-28 [email protected]

Information Disclosure Java

5.0

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector

Adjacent

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Apr 28, 2026 - 00:30 vuln.today

DescriptionNVD

Spring Boot's Cassandra auto-configuration does not perform hostname verification when establishing an SSL connection to Cassandra.

Affected: Spring Boot 4.0.0-4.0.5 (fix 4.0.6), 3.5.0-3.5.13 (fix 3.5.14), 3.4.0-3.4.15 (fix 3.4.16), 3.3.0-3.3.18 (fix 3.3.19), 2.7.0-2.7.32 (fix 2.7.33); Cassandra SSL auto-configuration. Versions that are no longer supported are also affected per vendor advisory.

AnalysisAI

Spring Boot's Cassandra auto-configuration fails to verify hostnames during SSL/TLS connection establishment to Cassandra servers, enabling man-in-the-middle attackers on the local network to intercept credentials and data by presenting a valid certificate for any domain. Affects Spring Boot 2.7.0-4.0.5; vendor-released patches available for all supported versions (4.0.6, 3.5.14, 3.4.16, 3.3.19, 2.7.33). …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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CVE-2026-40974 vulnerability details – vuln.today

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