{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "4.0.0"
              },
              {
                "fixed": "4.0.6"
              },
              {
                "introduced": "3.5.0"
              },
              {
                "fixed": "3.5.14"
              }
            ],
            "source": "DESCRIPTION"
          },
          "events": [
            {
              "introduced": "1c0e08b4c434b0e77a83098267b2a0f5a3fc56d7"
            },
            {
              "fixed": "8821ad2cd381bb4b9615a61479e1de7305a8ba39"
            },
            {
              "introduced": "8c2d6453243f319accaef7a190ff8ddf89f482a2"
            },
            {
              "fixed": "7d7b3ac12735161f9c096ce6cb415bdd9fc4a0f4"
            }
          ],
          "repo": "https://github.com/spring-projects/spring-boot",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "vmware",
    "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"
      }
    ]
  },
  "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.",
  "id": "CVE-2026-40992",
  "modified": "2026-09-06T03:30:48.093720531Z",
  "published": "2026-06-11T05:03:53.539Z",
  "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"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Mail Auto-Configuration Does Not Enable SSL Hostname Verification"
}