Security advisory

{
  "id": "9acddadbac0a5c40867ddff874e32585fad1b27e167da7c273a1a3ca9f97cad1",
  "url": "https://osv.dev/vulnerability/CVE-2020-8231",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-8231",
    "summary": "Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending data.",
    "evidence": "osv:CVE-2020-8231",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-8231",
      "aliases": [
        "CURL-CVE-2020-8231",
        "CVE-2020-8231"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/curl/curl",
              "type": "GIT",
              "events": [
                {
                  "introduced": "bf633a584dcbb0f80273ba856b7198ad1e395315"
                },
                {
                  "last_affected": "5a1fc8d33808d7b22f57bdf9403cda7ff07b0670"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.29.0"
                      },
                      {
                        "last_affected": "7.71.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "curl-7_71_1",
            "curl-7_71_0",
            "curl-7_70_0",
            "curl-7_69_1",
            "curl-7_69_0",
            "curl-7_68_0",
            "curl-7_67_0",
            "curl-7_66_0",
            "curl-7_65_3",
            "curl-7_65_2",
            "curl-7_65_1",
            "curl-7_65_0",
            "curl-7_64_1",
            "curl-7_64_0",
            "curl-7_63_0",
            "curl-7_62_0",
            "curl-7_61_1",
            "curl-7_61_0",
            "curl-7_60_0",
            "curl-7_59_0",
            "curl-7_58_0",
            "curl-7_57_0",
            "curl-7_56_1",
            "curl-7_56_0",
            "curl-7_55_1",
            "curl-7_55_0",
            "curl-7_54_1",
            "curl-7_54_0",
            "curl-7_53_1",
            "curl-7_53_0",
            "curl-7_52_1",
            "curl-7_52_0",
            "curl-7_51_0",
            "curl-7_50_3",
            "curl-7_50_2",
            "curl-7_50_1",
            "curl-7_50_0",
            "curl-7_49_1",
            "curl-7_49_0",
            "curl-7_48_0",
            "curl-7_47_1",
            "curl-7_47_0",
            "curl-7_46_0",
            "curl-7_45_0",
            "curl-7_44_0",
            "curl-7_43_0",
            "curl-7_42_0",
            "curl-7_41_0",
            "curl-7_40_0",
            "curl-7_39_0",
            "curl-7_38_0",
            "curl-7_37_1",
            "curl-7_37_0",
            "curl-7_36_0",
            "curl-7_35_0",
            "curl-7_34_0",
            "curl-7_33_0",
            "curl-7_32_0",
            "curl-7_31_0",
            "curl-7_30_0",
            "curl-7_29_0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-8231.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:54.741234922Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-389290.html",
        "https://cert-portal.siemens.com/productcert/html/ssa-398330.html",
        "https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E",
        "https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E",
        "https://security.gentoo.org/glsa/202012-14",
        "https://www.debian.org/security/2021/dsa-4881",
        "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf",
        "https://curl.haxx.se/docs/CVE-2020-8231.html",
        "https://hackerone.com/reports/948876",
        "https://www.oracle.com/security-alerts/cpuapr2022.html"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "siemens:sinec_infrastructure_network_services",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "1.0.1.1"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "splunk:universal_forwarder",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.2.0"
                  },
                  {
                    "fixed": "8.2.12"
                  },
                  {
                    "introduced": "9.0.0"
                  },
                  {
                    "fixed": "9.0.6"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "10.0"
                  },
                  {
                    "last_affected": "10.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "oracle:communications_cloud_native_core_policy",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "1.14.0"
                  },
                  {
                    "last_affected": "1.14.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "splunk:universal_forwarder",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.1.0"
                  },
                  {
                    "last_affected": "9.1.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-8231",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 438271,
  "published_at": "2020-12-14T20:15:13.59+00:00"
}