What is GHSA-9wxp-w4px-32vh?

GHSA-9wxp-w4px-32vh is a security advisory published by GitHub Security Advisories with Medium severity. Spring Boot's Mail Auto-Configuration Does Not Enable SSL Hostname Verification

Which CVE IDs does GHSA-9wxp-w4px-32vh cover?

GHSA-9wxp-w4px-32vh covers the following CVE IDs: CVE-2026-40992. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-9wxp-w4px-32vh?

GHSA-9wxp-w4px-32vh has a CVSS v3 base score of 5.0, published by GitHub Security Advisories.

Which products are affected by GHSA-9wxp-w4px-32vh?

GHSA-9wxp-w4px-32vh affects 3 products, including: maven/org.springframework.boot:spring-boot-starter-mail:\u003e= 4.0.0, \u003c= 4.0.6; maven/org.springframework.boot:spring-boot-starter-mail:\u003e= 3.5.0, \u003c= 3.5.14; maven/org.springframework.boot:spring-boot-starter-mail:\u003e= 3.4.0, \u003c= 3.4.16.

GHSA-9wxp-w4px-32vhMediumCVSS 5.0

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

Vendor

GitHub Security Advisories

Published

June 11, 2026

Last Modified

August 18, 2026

🔗 CVE IDs covered (1)

CVE-2026-40992 →

📋 Description

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 products3

maven/org.springframework.boot:spring-boot-starter-mail:>= 4.0.0, <= 4.0.6
maven/org.springframework.boot:spring-boot-starter-mail:>= 3.5.0, <= 3.5.14
maven/org.springframework.boot:spring-boot-starter-mail:>= 3.4.0, <= 3.4.16

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-40992
https://spring.io/security/cve-2026-40992
https://github.com/advisories/GHSA-9wxp-w4px-32vh