Bug 2463297 (CVE-2026-40970) - CVE-2026-40970 Spring Boot: Spring Boot: Missing hostname verification in Elasticsearch auto-configuration allows information disclosure
Summary: CVE-2026-40970 Spring Boot: Spring Boot: Missing hostname verification in Ela...
Keywords:
Status: NEW
Alias: CVE-2026-40970
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-27 21:01 UTC by OSIDB Bzimport
Modified: 2026-04-28 12:20 UTC (History)
56 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-04-27 21:01:11 UTC 
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.
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