CVE-2026-40992
mediumpriority · track · 0EPSS 0.001 · 2 %ileDEEUFRUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (20)
Products and version ranges known to be affected.
- Maven org.springframework.boot:spring-boot-starter-mail3.4.0 → 3.4.16osvUSpkg:maven/org.springframework.boot/spring-boot-starter-mail
- Maven org.springframework.boot:spring-boot-starter-mail3.5.0 → 3.5.15osvUSpkg:maven/org.springframework.boot/spring-boot-starter-mail
- Maven org.springframework.boot:spring-boot-starter-mail4.0.0 → 4.0.7osvUSpkg:maven/org.springframework.boot/spring-boot-starter-mail
advisories (4)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-1883VMware Tanzu Spring Boot: Mehrere SchwachstellenDeutsch2026-06-10csaf · cert_bundDE
Ein Angreifer aus einem angrenzenden Netzwerk kann mehrere Schwachstellen in VMware Tanzu Spring Boot ausnutzen, um Sicherheitsvorkehrungen zu umgehen Informationen offenzulegen und zu manipulieren oder potentiell Code auszuführen.
- GHSA-9wxp-w4px-32vhSpring Boot's Mail Auto-Configuration Does Not Enable SSL Hostname Verification2026-06-11ghsa · osvUS
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.
- CERTFR-2026-AVI-1336Multiples vulnérabilités dans les produits IBMFrançais2026-10-16vendor · certfrFR
- CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (4)
External citations — patches, advisories, analysis.
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