CVE-2026-40970
CVSS Score
5.0
EPSS Score
0.0%
EPSS Percentile
0th
When configured to use an SSL bundle, Spring Boot's Elasticsearch auto-configuration does not perform hostname verification when connecting to the Elasticsearch server. Affected: Spring Boot 4.0.0–4.0.5; upgrade to 4.0.6 or later per vendor advisory.
| CWE | CWE-295 |
| Vendor | spring |
| Product | spring boot |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Apr 27, 2026 |
| Last Updated | Apr 27, 2026 |
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CVSS v3 Breakdown
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
Affected Versions
Spring / Spring Boot
4.0.0 < 4.0.6