{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "d532922ff7f51e096a69fd97a2f0a37386e60243"
            }
          ],
          "repo": "https://github.com/postalserver/postal",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-5f4r-5jpr-rfhc"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25529.json"
  },
  "details": "Postal is an open source SMTP server. Postal versions less than 3.3.5 had a HTML injection vulnerability that allowed unescaped data to be included in the admin interface. The primary way for unescaped data to be added is via the API's \"send/raw\" method. This could allow arbitrary HTML to be injected in to the page which may modify the page in a misleading way or allow for unauthorised javascript to be executed. Fixed in 3.3.5 and higher.",
  "id": "CVE-2026-25529",
  "modified": "2026-04-01T23:10:17.233508005Z",
  "published": "2026-03-12T16:35:33.384Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25529.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/postalserver/postal/security/advisories/GHSA-5f4r-5jpr-rfhc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25529"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Postal has HTML injection / XSS in message view"
}