CVE-2026-40970

Name: CVE-2026-40970
Creator: NVD / NIST
Published: 2026-04-27T19:16:52.967+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.8/10EPSS 0.14%

Last modified Jun 17, 2026

CVE-2026-40970 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. 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.. EPSS estimates a 0.14% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.8/10

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

EPSS Probability

0.14%

3.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
Vmware	Spring Boot	>= 4.0.0, < 4.0.6

References

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

Timeline

Published: Apr 27, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-40970?

How severe is CVE-2026-40970?

CVE-2026-40970 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.

How do I fix CVE-2026-40970?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-40970?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST