Security advisory

{
  "id": "c479835bd7673c50e9780091792a6945d3c61c7a280943f95f8e02dad217d91f",
  "url": "https://osv.dev/vulnerability/CVE-2020-26422",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-26422",
    "summary": "Buffer overflow in QUIC dissector in Wireshark 3.4.0 to 3.4.1 allows denial of service via packet injection or crafted capture file",
    "evidence": "osv:CVE-2020-26422",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-26422",
      "aliases": [
        "CVE-2020-26422"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wireshark/wireshark",
              "type": "GIT",
              "events": [
                {
                  "introduced": "9733f173ea5e6255e8da208ef183210aa264d948"
                },
                {
                  "last_affected": "1a27f405875f528a58763e9053afeea558d0537a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:wireshark:wireshark:3.4.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.4.0"
                      },
                      {
                        "last_affected": "3.4.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:wireshark:wireshark:3.4.1:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.4.1"
                      },
                      {
                        "last_affected": "3.4.1"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.4.0",
            "3.4.1",
            "wireshark-3.4.1",
            "v3.4.1",
            "v3.4.1rc0",
            "wireshark-3.4.0",
            "v3.4.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26422.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/wireshark/wireshark",
              "type": "GIT",
              "events": [
                {
                  "introduced": "9733f173ea5e6255e8da208ef183210aa264d948"
                },
                {
                  "last_affected": "1a27f405875f528a58763e9053afeea558d0537a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:wireshark:wireshark:3.4.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.4.0"
                      },
                      {
                        "last_affected": "3.4.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:wireshark:wireshark:3.4.1:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.4.1"
                      },
                      {
                        "last_affected": "3.4.1"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.4.0",
            "3.4.1",
            "wireshark-3.4.1",
            "v3.4.1",
            "v3.4.1rc0",
            "wireshark-3.4.0",
            "v3.4.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26422.json"
          }
        }
      ],
      "modified": "2026-10-24T10:50:38.804158973Z",
      "provider": "osv",
      "references": [
        "https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26422.json",
        "https://security.gentoo.org/glsa/202101-12",
        "https://www.wireshark.org/security/wnpa-sec-2020-20.html",
        "https://gitlab.com/wireshark/wireshark/-/issues/17073",
        "https://www.oracle.com/security-alerts/cpuApr2021.html"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*"
            ],
            "vendor_product": "oracle:zfs_storage_appliance_kit",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.8"
                  },
                  {
                    "last_affected": "8.8"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-26422",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 442388,
  "published_at": "2020-12-21T18:15:15.477+00:00"
}