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.
Published: 2026-06-11
Score: 5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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References
History

Fri, 12 Jun 2026 23:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 11 Jun 2026 07:45:00 +0000

Type Values Removed Values Added
First Time appeared Spring
Spring spring Boot
Vendors & Products Spring
Spring spring Boot

Thu, 11 Jun 2026 06:45:00 +0000

Type Values Removed Values Added
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.
Title Mail Auto-Configuration Does Not Enable SSL Hostname Verification
Weaknesses CWE-295
References
Metrics cvssV3_1

{'score': 5, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L'}


Subscriptions

Spring Spring Boot
cve-icon MITRE

Status: PUBLISHED

Assigner: vmware

Published:

Updated: 2026-06-23T19:46:36.493Z

Reserved: 2026-04-16T02:19:09.389Z

Link: CVE-2026-40992

cve-icon Vulnrichment

Updated: 2026-06-11T12:45:56.759Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-11T07:16:27.177

Modified: 2026-06-11T15:21:30.653

Link: CVE-2026-40992

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-11T07:30:08Z

Weaknesses