{
"id": "GHSA-9wxp-w4px-32vh",
"aliases": [
"CVE-2026-40992"
],
"details": "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.\n\nAffected versions:\nSpring Boot 4.0.0 through 4.0.6; 3.5.0 through 3.5.14; 3.4.0 through 3.4.16.",
"summary": "Spring Boot's Mail Auto-Configuration Does Not Enable SSL Hostname Verification",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.0.7"
}
]
}
],
"package": {
"name": "org.springframework.boot:spring-boot-starter-mail",
"ecosystem": "Maven"
},
"database_specific": {
"last_known_affected_version_range": "<= 4.0.6"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "3.5.0"
},
{
"fixed": "3.5.15"
}
]
}
],
"package": {
"name": "org.springframework.boot:spring-boot-starter-mail",
"ecosystem": "Maven"
},
"database_specific": {
"last_known_affected_version_range": "<= 3.5.14"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "3.4.0"
},
{
"last_affected": "3.4.16"
}
]
}
],
"package": {
"name": "org.springframework.boot:spring-boot-starter-mail",
"ecosystem": "Maven"
}
}
],
"modified": "2026-08-18T20:13:38Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L"
}
],
"published": "2026-06-11T09:31:55Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40992",
"type": "ADVISORY"
},
{
"url": "https://github.com/spring-projects/spring-boot",
"type": "PACKAGE"
},
{
"url": "https://spring.io/security/cve-2026-40992",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"severity": "MODERATE",
"github_reviewed": true,
"nvd_published_at": "2026-06-11T07:16:27Z",
"github_reviewed_at": "2026-08-18T20:13:38Z"
}
}