Medium [CVE-2026-40970] When configured to use an SSL bundle, Spring Boot's Elasticsearch auto-configuration does not perform hostname verification
This medium-severity VMware (Broadcom) advisory covers CVE-2026-40970 affecting Spring Boot.
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Summary
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.
- 4.0.0
- 4.0.5
NVD record · high-confidence parse· fetched 2 months ago·verify at source
Mitigation
Upgrade to a fixed release: 4.0.6. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
NVD record · high-confidence parse· fetched 2 months ago·verify at source
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