GitHub Advisoryadvisory · Maven

GHSA-c96x-rpm4-349p Spring Boot's Elasticsearch auto-configuration doesn't perform hostname verification when connecting to the Elasticsearch server.

MEDIUM Published 2026-04-27 Modified 2026-05-06 Official page ↗
Aliases
CVE-2026-40970
Ecosystem
Maven
Packages
org.springframework.boot:spring-boot-elasticsearch
Severity
Moderate
CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Weaknesses
CWE-295
Reviewed
2026-05-06

Affected packages

• Maven org.springframework.boot:spring-boot-elasticsearch: >= 4.0.0, < 4.0.6 → fixed in 4.0.6

Description

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.

Related

Alias · CVE (1)

  • CVE-2026-40970 When configured to use an SSL bundle, Spring Boot's Elasticsearch auto-configuration does not perform hostname verification when connecting… vulnerability

Weakness · CWE (1)

  • CWE-295 Improper Certificate Validation weakness

References