GHSA-9wxp-w4px-32vh

ghsaUSosv

Spring Boot's Mail Auto-Configuration Does Not Enable SSL Hostname Verification

view advisory published 2026-06-11Licence: CC-BY-4.0

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.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-40992US	—	0.12% (2nd)	—	2026-06-11
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.chec…

references

External citations — patches, advisories, analysis.

https://github.com/spring-projects/spring-bootPACKAGE
https://nvd.nist.gov/vuln/detail/CVE-2026-40992ADVISORY
https://spring.io/security/cve-2026-40992WEB

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