Security advisory

{
  "id": "551e8037e94cc05cd9ab1fc59722a17accd1d2bc51f307be28fdc7c6637e7aab",
  "url": "https://osv.dev/vulnerability/CVE-2016-5823",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2016-5823",
    "summary": "The icalproperty_new_clone function in libical 0.47 and 1.0 allows remote attackers to cause a denial of service (use-after-free) via a crafted ics file.",
    "evidence": "osv:CVE-2016-5823",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2016-5823",
      "aliases": [
        "CVE-2016-5823"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/libical/libical",
              "type": "GIT",
              "events": [
                {
                  "introduced": "43858141030ba123a4959231cadc9951b983f0fd"
                },
                {
                  "last_affected": "43858141030ba123a4959231cadc9951b983f0fd"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:libical_project:libical:1.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0"
                      },
                      {
                        "last_affected": "1.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.0",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-5823.json"
          }
        }
      ],
      "modified": "2026-10-24T10:31:02.550732734Z",
      "provider": "osv",
      "references": [
        "https://security.gentoo.org/glsa/201904-02"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:libical_project:libical:0.47:*:*:*:*:*:*:*"
            ],
            "vendor_product": "libical_project:libical",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0.47"
                  },
                  {
                    "last_affected": "0.47"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2016-5823",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 440051,
  "published_at": "2017-01-27T22:59:00.553+00:00"
}