{
  "id": "CVE-2022-26485",
  "url": "https://spydr.io/cve/CVE-2022-26485",
  "published": "2022-12-22T20:15:22.563Z",
  "modified": "2026-08-19T15:29:21.807Z",
  "score": 8.8,
  "severity": "high",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
  "score_source": "NVD",
  "epss": 0.14261,
  "epss_percentile": 0.96508,
  "exploited": true,
  "kev": {
    "added": "2022-03-07",
    "due": "2022-03-21",
    "action": "Apply updates per vendor instructions.",
    "ransomware": "Unknown",
    "name": "Mozilla Firefox Use-After-Free Vulnerability",
    "notes": "https://nvd.nist.gov/vuln/detail/CVE-2022-26485"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "Mozilla"
  ],
  "products": [
    "Mozilla Firefox",
    "Mozilla Firefox ESR",
    "Mozilla Firefox for Android",
    "Mozilla Thunderbird",
    "Mozilla Focus"
  ],
  "cwes": [
    "CWE-416"
  ],
  "description": "Removing an XSLT parameter during processing could have lead to an exploitable use-after-free. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird < 91.6.2, and Focus < 97.3.0.",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 8.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1758062",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2022-09/",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26485",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2022-26485",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}