{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:nextcloud:mail:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "2.2.0"
              },
              {
                "fixed": "2.2.8"
              },
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "3.3.0"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "e57d2891a69ec6851cc4e3782c0a9f7e0eb52c80"
            },
            {
              "fixed": "806f64a349f75b1ecd7871ea7aea4a11ed815774"
            },
            {
              "introduced": "b01f5a6d057a346683005627f0a0dd1f80bbc811"
            },
            {
              "fixed": "5d492d2eb8cbd42c5324ba04aea7a05d414e69dd"
            }
          ],
          "repo": "https://github.com/nextcloud/mail",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-8j9x-fmww-qr37"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45660.json"
  },
  "details": "Nextcloud mail is an email app for the Nextcloud home server platform. In affected versions a missing check of origin, target and cookies allows for an attacker to abuse the proxy endpoint to denial of service a third server. It is recommended that the Nextcloud Mail is upgraded to 2.2.8 or 3.3.0. There are no known workarounds for this vulnerability.",
  "id": "CVE-2023-45660",
  "modified": "2026-08-12T03:51:11.648550920Z",
  "published": "2023-10-16T18:32:00.486Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/1895874"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45660.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8j9x-fmww-qr37"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-45660"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nextcloud/mail/pull/8459"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Require strict cookies for image proxy requests in Nextcloud Mail"
}