CVE-2026-40992: Mail Auto-Configuration Does Not Enable SSL Hostname Verification
Spring · Spring Boot
Vendor fix available · Affected: Spring Boot · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 2% of scored CVEs
DescriptionCVE.org
Spring Boot's Mail auto-configuration does not enable hostname verification. Applications that set the relevant JavaMail property, such as spring.mail.properties.mail.smtp.ssl.checkserveridentity=true, are not affected. Affected versions: Spring Boot 4.0.0 through 4.0.6; 3.5.0 through 3.5.14; 3.4.0 through 3.4.16.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Spring · Spring Bootfrom 4.0.0 before 4.0.6.1; from 3.5.0 before 3.5.14.1; from 3.4.0 before 3.4.17
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
CoverageNo articles yet
No CyberSIXT article names CVE-2026-40992 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.