How severe is CVE-2026-40974?

CVE-2026-40974 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-40974 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40974?

CVE-2026-40974 affects Vmware Spring Boot. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40974?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-40974 have an EU (EUVD) identifier?

Yes. CVE-2026-40974 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25938.

When was CVE-2026-40974 published?

CVE-2026-40974 was published on 2026-04-28 and last updated on 2026-06-17.

CVE-2026-40974

CVE-2026-40974 is a medium-severity vulnerability in Vmware Spring Boot with a CVSS 3.x base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-295.

Key facts

Severity: Medium (CVSS 3.x base score 5.0)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25938
Weakness: CWE-295
Affected product: Vmware Spring Boot
Published: 2026-04-28
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-40974?: 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.
How severe is CVE-2026-40974?: CVE-2026-40974 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-40974 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40974?: CVE-2026-40974 affects Vmware Spring Boot. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40974?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-40974 have an EU (EUVD) identifier?: Yes. CVE-2026-40974 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25938.
When was CVE-2026-40974 published?: CVE-2026-40974 was published on 2026-04-28 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*

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