CVE-2026-40970

CVSS 5 MEDIUMEPSS 0.1%CWE-295

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.

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

Affected products

Spring · Spring Boot

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References

https://spring.io/security/cve-2026-40970