{
  "affected": [
    {
      "database_specific": {
        "unresolved_ranges": [
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "92.0"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "91.0"
              },
              {
                "fixed": "91.1"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "78.14"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "78.14"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "91.0"
              },
              {
                "fixed": "91.1"
              }
            ]
          }
        ]
      }
    }
  ],
  "details": "When delegating navigations to the operating system, Firefox would accept the `mk` scheme which might allow attackers to launch pages and execute scripts in Internet Explorer in unprivileged mode. *This bug only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox \u003c 92, Thunderbird \u003c 91.1, Thunderbird \u003c 78.14, Firefox ESR \u003c 78.14, and Firefox ESR \u003c 91.1.",
  "id": "CVE-2021-38492",
  "modified": "2026-03-15T21:45:18.381785030Z",
  "published": "2021-11-03T01:15:07.200Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.mozilla.org/security/advisories/mfsa2021-38/"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.mozilla.org/security/advisories/mfsa2021-39/"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.mozilla.org/security/advisories/mfsa2021-40/"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.mozilla.org/security/advisories/mfsa2021-41/"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.mozilla.org/security/advisories/mfsa2021-42/"
    },
    {
      "type": "ADVISORY",
      "url": "https://security.gentoo.org/glsa/202208-14"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1721107"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}