by Kastro
Paper/Archive/CVE-2026-40974

CVE-2026-40974

Spring Spring Boot — Spring Boot's Cassandra auto-configuration does not perform hostname verification when establishing an SSL connection to Cassandra.

EPSS 0.2%CVSS 9.8
critical.is priorityof 100
31
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 7.8.078 × 201.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Spring Boot4.0.0 – < 4.0.64.0.6CNA
Spring Boot3.5.0 – < 3.5.143.5.14CNA
Spring Boot3.4.0 – < 3.4.163.4.16CNA
Spring Boot3.3.0 – < 3.3.193.3.19CNA
Spring Boot2.7.0 – < 2.7.332.7.33CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vmware (CNA)5.0CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refspring.io/security/cve-2026-40974