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CVE-20XX-?

CVE-2026-40992

5.0 MEDIUM 0.1% exploit odds Fix listed

What it is

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.

At a glance

Exploitability: Can be exploited from the same network segment without logging in. Limited direct impact.
Exploit odds: 0.1% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-06-11 07:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-09-04 18:05 UTC Last updatedMost recent change to the record

Details

Published: 2026-06-11 07:16 UTC
Last modified: 2026-09-04 18:05 UTC
Exploit probability: 0.1% · EPSS, next 30 days
Weakness: CWE-295 · Improper certificate validation
Record status: Analyzed

Affected

VMware Spring Boot < 3.4.17
VMware Spring Boot < 3.5.14.1
VMware Spring Boot < 4.0.6.1

Attack profile CVSS 3.1 · 5.0

Attack vector: Adjacent network
Complexity: High
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: Low

Raw vector

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Meme: I wake up, CVE-2026-40992

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Fix and advisories

https://spring.io/security/cve-2026-40992

References

https://spring.io/security/cve-2026-40992

NVD record · CVE.org record