PT-2026-35515 · Vmware · Spring Boot

August829 + 1 · Published 2026-04-27 · Updated 2026-05-17 · CVE-2026-40970

Positive Technologies (AI Summary)

CVSS v3.1

6.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Spring Boot versions 4.0.0 through 4.0.5

Description When configured to use an SSL bundle, the Elasticsearch auto-configuration fails to perform hostname verification during the connection to the Elasticsearch server. Hostname verification is a security process that ensures the server's certificate matches its actual hostname to prevent man-in-the-middle attacks.

Recommendations Upgrade to version 4.0.6 or later.

Fix

Improper Certificate Validation

Weakness Enumeration

CWE-295

Related Identifiers

CVE-2026-40970

GHSA-C96X-RPM4-349P

Affected Products

Spring Boot

References · 10

• https://osv.dev/vulnerability/GHSA-c96x-rpm4-349p · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-40970 · Security Note
• https://spring.io/security/cve-2026-40970 · Vendor Advisory
• https://github.com/spring-projects/spring-boot · Note
• https://github.com/spring-projects/spring-boot/releases/tag/v4.0.6 · Note
• https://twitter.com/VulmonFeeds/status/2048937400756261367 · Twitter Post
• https://t.me/CVEtracker/51978 · Telegram Post
• https://twitter.com/threatcluster/status/2048832252293861552 · Twitter Post
• https://twitter.com/f1tym1/status/2055931202268234051 · Twitter Post
• https://t.me/cveNotify/163475 · Telegram Post