CVE-2026-40992
published 2026-06-11CVE-2026-40992: Spring Boot's Mail auto-configuration does not enable hostname verification. Applications that set the relevant JavaMail property, such as…
PriorityP424medium5CVSS 3.1
AVAACHPRNUINSUCLILAL
EPSS
0.12%
2.5th percentile
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
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| spring | spring_boot | >= 3.4.0 < 3.4.17 | 3.4.17 |
| spring | spring_boot | >= 3.5.0 < 3.5.14.1 | 3.5.14.1 |
| spring | spring_boot | >= 4.0.0 < 4.0.6.1 | 4.0.6.1 |
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
VulDB
Vmware Spring Boot up to 3.4.16/3.5.14/4.0.6 Configuration certificate validation (CNNVD-202606-3065)
vuldb·2026-06-13·CVSS 5.0
CVE-2026-40992 [MEDIUM] Vmware Spring Boot up to 3.4.16/3.5.14/4.0.6 Configuration certificate validation (CNNVD-202606-3065)
A vulnerability was found in Vmware Spring Boot up to 3.4.16/3.5.14/4.0.6. It has been classified as problematic. Affected is an unknown function of the component Configuration Handler. Performing a manipulation results in improper certificate validation.
This vulnerability is reported as CVE-2026-40992. The attack is possible to be carried out remotely. No exploit exists.
Upgrading the affected component is recommended.
GHSA
Spring Boot's Mail auto-configuration does not enable hostname verification.
ghsa_unreviewed·2026-06-11
CVE-2026-40992 [MEDIUM] CWE-295 Spring Boot's Mail auto-configuration does not enable hostname verification.
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-06-11
Published