{
  "cveId": "CVE-2026-73251",
  "url": "https://patchblox.com/security/cve/CVE-2026-73251",
  "summary": "CVE-2026-73251 is fixed in mongoose on 1 platform by DEBIAN-CVE-2026-73251 (version 7.23\u002Bds-1), released August 19, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "mongoose: Mongoose is an embedded web server and network library",
  "description": "Mongoose is an embedded web server and network library. Prior to 7.23, a network attacker can impersonate a TLS server to a Mongoose client configured with a multi-certificate CA bundle. In src/tls_builtin.c, the mg_tls_init() function stores the bundle in tls-\u003Eca_bundle_der while tls-\u003Eca_der.len remains zero, and mg_tls_recv_cert() uses tls_bundle_find() to accept a Common Name match without calling mg_tls_verify_cert_signature(). A forged self-signed certificate can therefore satisfy hostname and CertificateVerify checks and enable interception, credential disclosure, traffic modification, and malicious responses. This issue is fixed in version 7.23.",
  "published": "2026-08-20T18:16:45Z",
  "severity": "critical",
  "cvss": 9.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "epss": 0.00193,
  "epssPercentile": 0.08986,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "mongoose",
      "release": "Debian 14",
      "fixedVersion": "7.23\u002Bds-1",
      "fix": "DEBIAN-CVE-2026-73251",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-73251",
      "released": "2026-08-19T23:17:07Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}