Security advisory

{
  "id": "89702b4cfdcf633ef84d6c4fbc7f1905f683f94e20cd08ca612ec07ddcbae496",
  "url": "https://osv.dev/vulnerability/CVE-2021-29063",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-29063",
    "summary": "A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in Mpmath v1.0.0 through v1.2.1 when the mpmathify function is called.",
    "evidence": "osv:CVE-2021-29063",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-29063",
      "aliases": [
        "CVE-2021-29063",
        "GHSA-f865-m6cq-j9vx",
        "PYSEC-2021-427"
      ],
      "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/mpmath/mpmath",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8e21a638727567914536f4a4a63aa5fa204c40f0"
                },
                {
                  "last_affected": "c6a35f9ee7c294bcf4e0517bc76b268843db9499"
                },
                {
                  "fixed": "46d44c3c8f3244017fe1eb102d564eb4ab8ef750"
                },
                {
                  "fixed": "b5c04506ef0cd4a1f1213f8389ee21c9c3551582"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mpmath:mpmath:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0.0"
                      },
                      {
                        "last_affected": "1.2.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "46d44c3c8f3244017fe1eb102d564eb4ab8ef750"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b5c04506ef0cd4a1f1213f8389ee21c9c3551582"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "1.3.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.2.1",
            "1.2.0-rebuild",
            "1.2.0",
            "1.1.0",
            "1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-29063.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:38.719328232Z",
      "provider": "osv",
      "references": [
        "https://github.com/mpmath/mpmath/releases/tag/1.3.0",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3M5O55E7VUDMXCPQR6MQTOIFDKHP36AA/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EIUX3XWY2K3MSO7QXMZXQQYAURARSPC5/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MS2U6GLXQSRZJE2HVUAUMVFR2DWQLCZG/",
        "https://www.npmjs.com/package/hosted-git-info",
        "https://github.com/yetingli/SaveResults/blob/main/js/hosted-git-info.js",
        "https://github.com/fredrik-johansson/mpmath/commit/46d44c3c8f3244017fe1eb102d564eb4ab8ef750",
        "https://github.com/npm/hosted-git-info/pull/76",
        "https://github.com/yetingli/PoCs/blob/main/CVE-2021-29063/Mpmath.md"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "33"
                  },
                  {
                    "last_affected": "33"
                  },
                  {
                    "introduced": "34"
                  },
                  {
                    "last_affected": "34"
                  },
                  {
                    "introduced": "35"
                  },
                  {
                    "last_affected": "35"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-29063",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385792,
  "published_at": "2021-06-21T20:15:09.477+00:00"
}