CVE-2026-40992
Fixed upstream EPSS <1%CVSS 5.0
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.
Products: Spring Boot
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Maven | org.springframework.boot:spring-boot-starter-mail | 4.0.7 |
| Maven | org.springframework.boot:spring-boot-starter-mail | 3.5.15 |
| Maven | org.springframework.boot:spring-boot-starter-mail | no fix |