CVE-2026-40974

Name: CVE-2026-40974
Creator: NVD / NIST
Published: 2026-04-28T00:16:24.523+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.18%

Last modified Jun 17, 2026

CVE-2026-40974 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Spring Boot's Cassandra auto-configuration does not perform hostname verification when establishing an SSL connection to Cassandra. Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); Cassandra SSL auto-configuration. Versions that are no longer supported are also affected per vendor advisory.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

Spring Boot's Cassandra auto-configuration does not perform hostname verification when establishing an SSL connection to Cassandra. Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); Cassandra SSL auto-configuration. Versions that are no longer supported are also affected per vendor advisory.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.18%

8.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
Vmware	Spring Boot	>= 2.7.0, < 2.7.33
Vmware	Spring Boot	>= 3.3.0, < 3.3.19
Vmware	Spring Boot	>= 3.4.0, < 3.4.16
Vmware	Spring Boot	>= 3.5.0, < 3.5.14
Vmware	Spring Boot	>= 4.0.0, < 4.0.6

References

https://spring.io/security/cve-2026-40974Vendor Advisory

Timeline

Published: Apr 28, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-40974?

How severe is CVE-2026-40974?

CVE-2026-40974 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.

How do I fix CVE-2026-40974?

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-2026-40974?

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

Scan your code now

Source: NVD / NIST