Security advisory

{
  "id": "615641438dfadaff06a6bdb53b035be05353ad9afa51059f71e8c5d9e39b30d0",
  "url": "https://osv.dev/vulnerability/CVE-2021-33797",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-33797",
    "summary": "Buffer-overflow in jsdtoa.c in Artifex MuJS in versions 1.0.1 to 1.1.1. An integer overflow happens when js_strtod() reads in floating point exponent, which leads to a buffer overflow in the pointer *d.",
    "evidence": "osv:CVE-2021-33797",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-33797",
      "aliases": [
        "CVE-2021-33797"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ccxvii/mujs",
              "type": "GIT",
              "events": [
                {
                  "introduced": "4792d16f17b15a1eca3c2a9c856dc13fda1d23c5"
                },
                {
                  "last_affected": "6d1404397f3c3433334418f56048bead007729ac"
                },
                {
                  "fixed": "833b6f1672b4f2991a63c4d05318f0b84ef4d550"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:artifex:mujs:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0.1"
                      },
                      {
                        "last_affected": "1.1.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "833b6f1672b4f2991a63c4d05318f0b84ef4d550"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.1.1",
            "1.1.0",
            "1.0.9",
            "1.0.8",
            "1.0.7",
            "1.0.6",
            "1.0.5",
            "1.0.4",
            "1.0.3",
            "1.0.2",
            "1.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33797.json",
            "vanir_signatures": [
              {
                "id": "CVE-2021-33797-6cc29e16",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "288979091544294782111518819104233456394",
                    "61581765318884466210923875556097423407",
                    "33659201827772043129384467252092958873",
                    "10652266890852190394524829872989947004",
                    "67837103942097848649576271900656043397",
                    "294322422671747322356550470135510402828",
                    "103767349172362287088416722015036295073"
                  ]
                },
                "source": "https://github.com/ccxvii/mujs/commit/833b6f1672b4f2991a63c4d05318f0b84ef4d550",
                "target": {
                  "file": "jsdtoa.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2021-33797-be8d4644",
                "digest": {
                  "length": 2020,
                  "function_hash": "124021268302342966659032939690289369075"
                },
                "source": "https://github.com/ccxvii/mujs/commit/833b6f1672b4f2991a63c4d05318f0b84ef4d550",
                "target": {
                  "file": "jsdtoa.c",
                  "function": "js_strtod"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T14:09:44Z"
          }
        }
      ],
      "modified": "2026-10-20T14:09:44.626123605Z",
      "provider": "osv",
      "references": [
        "https://github.com/ccxvii/mujs/issues/148",
        "https://github.com/ccxvii/mujs/commit/833b6f1672b4f2991a63c4d05318f0b84ef4d550"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-33797",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388598,
  "published_at": "2023-04-17T22:15:07.677+00:00"
}