{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "49.0.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4d035a4225965edeffd312079a510ef25fcfdcb2"
            }
          ],
          "repo": "https://github.com/pyca/cryptography",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-m2h6-j472-rp4c"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-295"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/69xxx/CVE-2026-69248.json"
  },
  "details": "cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 49.0.0, if an intermediate constrained CA permits the DNS name foo.example.com, and the leaf certificate has a wildcard in its DNS SAN of *.example.com, python-cryptography's verifier accepts which allows escaping outside of the permitted names. The core issue is in DNSConstraint::matches, where a wildcard pattern was treated as matching a more-specific permitted constraint even though *.example.com can expand to sibling names such as bar.example.com outside foo.example.com. This allows acceptance of an invalid certificate chain. This issue is fixed in 49.0.0.",
  "id": "CVE-2026-69248",
  "modified": "2026-08-05T03:30:35.212590187Z",
  "published": "2026-08-03T21:21:43.710Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/69xxx/CVE-2026-69248.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/pyca/cryptography/security/advisories/GHSA-m2h6-j472-rp4c"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-69248"
    },
    {
      "type": "FIX",
      "url": "https://github.com/pyca/cryptography/commit/4d035a4225965edeffd312079a510ef25fcfdcb2"
    },
    {
      "type": "FIX",
      "url": "https://github.com/pyca/cryptography/pull/14888"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "python-cryptography verifier accepts wildcard DNS names allowing escape from permittedSubtrees"
}