Security advisory

{
  "id": "c92596fba39b99609849ab327ad5e08be4a24b12e48889e22e2d5fef0a250203",
  "url": "https://osv.dev/vulnerability/CVE-2020-24661",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-24661",
    "summary": "GNOME Geary before 3.36.3 mishandles pinned TLS certificate verification for IMAP and SMTP services using invalid TLS certificates (e.g., self-signed certificates) when the client system is not configured to use a system-provided PKCS#11 store. This allows a meddler in the middle to present a different invalid certificate to intercept incoming and outgoing mail.",
    "evidence": "osv:CVE-2020-24661",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-24661",
      "aliases": [
        "CVE-2020-24661"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.gnome.org/gnome/geary",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "17f2129fe9cf96cbb00b4c38b5174e9bbd30f118"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gnome:geary:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.36.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.36.2",
            "3.36.1",
            "3.36.0",
            "3.35.90",
            "3.35.2",
            "3.35.1",
            "geary-3.33.91",
            "geary-3.33.90",
            "geary-3.33.1",
            "geary-0.12.0",
            "geary-0.11.0",
            "0.11.0",
            "geary-0.10.0",
            "geary-0.9.1",
            "geary-0.9.0",
            "geary-0.8.0",
            "geary-0.7.2",
            "geary-0.7.1",
            "geary-0.7.0",
            "geary-0.6.0",
            "geary-0.5.3",
            "geary-0.5.2",
            "geary-0.5.1",
            "geary-0.5.0",
            "geary-0.4.0",
            "geary-0.4.0pr2",
            "geary-0.4.0pr1",
            "geary-0.2.0",
            "geary-0.1.90",
            "geary-0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-24661.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:53.083646029Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G7OTYTGND6EFOKNQJWCHKKXKSN7SM73Y/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NS6CSTOBVO5HSAR3X5CT6DS6QDHXDB26/",
        "https://tools.cisco.com/security/center/content/CiscoSeg/message/NS6CSTOBVO5HSAR3X5CT6DS6QDHXDB26/",
        "https://gitlab.gnome.org/GNOME/geary/-/issues/866"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "31"
                  },
                  {
                    "last_affected": "31"
                  },
                  {
                    "introduced": "32"
                  },
                  {
                    "last_affected": "32"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-24661",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383994,
  "published_at": "2020-08-26T16:15:12.76+00:00"
}