{
  "fix": "RHSA-2021:4097",
  "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4097",
  "summary": "RHSA-2021:4097, released November 2, 2021, fixes 1 CVE across 4 products. One of them is being exploited (CVE-2021-30858); 1 on CISA KEV. Patch Radar priority: Patch now.",
  "platform": "linux",
  "type": "advisory",
  "title": "Security update for 4 packages",
  "released": "2021-11-02T00:00:00Z",
  "priority": "Patch now",
  "priorityTier": 1,
  "priorityReason": "Closes CVE-2021-30858, exploited (CISA KEV)",
  "supported": true,
  "cveCount": 1,
  "exploitedCveCount": 1,
  "kevCveCount": 1,
  "ransomwareCveCount": 0,
  "maxEpss": 0.13379,
  "maxCvss": 8.8,
  "vendorAdvisory": "https://access.redhat.com/errata/RHSA-2021:4097",
  "appliesTo": [
    {
      "product": "webkit2gtk3",
      "productUrl": "https://patchblox.com/security/product/linux/webkit2gtk3",
      "release": "RHEL 8",
      "fixedVersion": "0:2.30.4-3.el8_4",
      "supported": true
    },
    {
      "product": "webkit2gtk3-devel",
      "productUrl": "https://patchblox.com/security/product/linux/webkit2gtk3-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:2.30.4-3.el8_4",
      "supported": true
    },
    {
      "product": "webkit2gtk3-jsc",
      "productUrl": "https://patchblox.com/security/product/linux/webkit2gtk3-jsc",
      "release": "RHEL 8",
      "fixedVersion": "0:2.30.4-3.el8_4",
      "supported": true
    },
    {
      "product": "webkit2gtk3-jsc-devel",
      "productUrl": "https://patchblox.com/security/product/linux/webkit2gtk3-jsc-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:2.30.4-3.el8_4",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2021-30858",
      "url": "https://patchblox.com/security/cve/CVE-2021-30858",
      "title": "webkit2gtk3-jsc: WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.\n\nSecurity Fix(es):\n\n* webkitgt...",
      "priority": "Patch now",
      "severity": "Moderate",
      "cvss": 8.8,
      "epss": 0.13379,
      "kev": true,
      "ransomware": false,
      "exploited": true,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T12:40:37Z"
}