{"id":"CVE-2026-40992","summary":"Mail Auto-Configuration Does Not Enable SSL Hostname Verification","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.","aliases":["GHSA-9wxp-w4px-32vh"],"modified":"2026-09-06T03:45:32.598848943Z","published":"2026-06-11T05:03:53.539Z","database_specific":{"cwe_ids":["CWE-295"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40992.json","unresolved_ranges":[{"extracted_events":[{"introduced":"4.0.0"},{"fixed":"4.0.6.1"},{"introduced":"3.5.0"},{"fixed":"3.5.14.1"},{"introduced":"3.4.0"},{"fixed":"3.4.17"}],"source":"AFFECTED_FIELD"},{"extracted_events":[{"introduced":"4.0.0"},{"fixed":"4.0.6"},{"introduced":"3.5.0"},{"fixed":"3.5.14"},{"introduced":"3.4.0"},{"fixed":"3.4.16"}],"source":"DESCRIPTION"}],"cna_assigner":"vmware"},"references":[{"type":"WEB","url":"https://spring.io/security/cve-2026-40992"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40992.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40992"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/spring-projects/spring-boot","events":[{"introduced":"1c0e08b4c434b0e77a83098267b2a0f5a3fc56d7"},{"fixed":"8821ad2cd381bb4b9615a61479e1de7305a8ba39"},{"introduced":"8c2d6453243f319accaef7a190ff8ddf89f482a2"},{"fixed":"7d7b3ac12735161f9c096ce6cb415bdd9fc4a0f4"}],"database_specific":{"source":"DESCRIPTION","extracted_events":[{"introduced":"4.0.0"},{"fixed":"4.0.6"},{"introduced":"3.5.0"},{"fixed":"3.5.14"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40992.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L"}]}