Security advisory

{
  "id": "6150b8e61c864284755b91f1d4904bd20efd80526a6d388a35316365e85527ef",
  "url": "https://osv.dev/vulnerability/CVE-2026-28815",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-28815",
    "summary": "A remote attacker can supply a short X-Wing HPKE encapsulated key and trigger an out-of-bounds read in the C decapsulation path, potentially causing a crash or memory disclosure depending on runtime protections. This issue is fixed in swift-crypto version 4.3.1.",
    "evidence": "osv:CVE-2026-28815",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-28815",
      "aliases": [
        "CVE-2026-28815",
        "GHSA-9m44-rr2w-ppp7"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apple/swift-crypto",
              "type": "GIT",
              "events": [
                {
                  "introduced": "bcd2b89f2a4446395830b82e4e192765edd71e18"
                },
                {
                  "fixed": "bb4ba815dab96d4edc1e0b86d7b9acf9ff973a84"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apple:swift-crypto:*:*:*:*:*:swift:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0"
                      },
                      {
                        "fixed": "4.3.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.3.0",
            "4.2.0",
            "4.1.0",
            "4.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28815.json"
          }
        }
      ],
      "modified": "2026-10-20T11:59:38.475725920Z",
      "provider": "osv",
      "references": [
        "https://github.com/apple/swift-crypto/security/advisories/GHSA-9m44-rr2w-ppp7"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2026-28815",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387238,
  "published_at": "2026-04-03T03:16:18.093+00:00"
}