CVE-2026-87866 affecting package cmake 3.30.3-15

{
  "id": "571e13f155b978627d5d9ce59f66c8a5c10ec540d87181828b022453d1b6970a",
  "url": "https://osv.dev/vulnerability/AZL-109920",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-87866 affecting package cmake 3.30.3-15",
    "summary": "When built with wolfSSL, curl can successfully validate a pinned public key hash against a key the TLS peer does not possess. During the TLS handshake, wolfSSL validates the connection, but curl's subsequent re-parsing of the same certificate - tricked by a manipulated validity length field - extracts and matches a different embedded key, incorrectly authorizing the pinned public key.",
    "evidence": "osv:AZL-109920",
    "products": [
      {
        "name": {
          "value": "cmake",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "AZL-109920",
      "aliases": [
        "AZL-109920"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "3.30.3-15"
                }
              ]
            }
          ],
          "package": {
            "name": "cmake",
            "purl": "pkg:rpm/azure-linux/cmake",
            "ecosystem": "Azure Linux:3"
          },
          "database_specific": {
            "source": "https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-109920.json"
          }
        }
      ],
      "modified": "2026-10-27T05:36:16Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-87866"
      ],
      "references": [
        "https://nvd.nist.gov/vuln/detail/CVE-2026-87866"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-87866",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 460546,
  "published_at": "2026-10-20T21:17:20+00:00"
}