{
  "fix": "RHSA-2026:20563",
  "url": "https://patchblox.com/security/fix/linux/rhsa-2026-20563",
  "summary": "RHSA-2026:20563, released April 30, 2026, fixes 5 CVEs in xorg-x11-server-Xwayland (version 24.1.5-6.el10_0). None of them is reported as exploited. Patch Radar priority: Urgent.",
  "platform": "linux",
  "type": "advisory",
  "title": "xorg-x11-server-Xwayland security update",
  "released": "2026-04-30T14:22:30Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2026-34002, rated Critical",
  "supported": true,
  "cveCount": 5,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00489,
  "maxCvss": 9.1,
  "vendorAdvisory": "https://access.redhat.com/errata/RHSA-2026:20563",
  "appliesTo": [
    {
      "product": "xorg-x11-server-Xwayland",
      "productUrl": "https://patchblox.com/security/product/linux/xorg-x11-server-xwayland",
      "release": "RHEL 10",
      "fixedVersion": "24.1.5-6.el10_0",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-34000",
      "url": "https://patchblox.com/security/cve/CVE-2026-34000",
      "title": "xorg-server: A flaw was found in the X.Org X server",
      "priority": "Urgent",
      "severity": "critical",
      "cvss": 9.1,
      "epss": 0.00489,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-34002",
      "url": "https://patchblox.com/security/cve/CVE-2026-34002",
      "title": "xorg-x11-server: This update for xorg-x11-server fixes the following issues:\n\n- CVE-2026-33999: XKB integer underflow in XkbSetCompatM...",
      "priority": "Urgent",
      "severity": "critical",
      "cvss": 9.1,
      "epss": 0.00489,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-33999",
      "url": "https://patchblox.com/security/cve/CVE-2026-33999",
      "title": "Xorg: xwayland: x.org x server: denial of service via integer underflow in xkb compatibility map handling",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.8,
      "epss": 0.0038,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-34001",
      "url": "https://patchblox.com/security/cve/CVE-2026-34001",
      "title": "xorg-x11-server-common: X.Org is an open-source implementation of the X Window System",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00264,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-34003",
      "url": "https://patchblox.com/security/cve/CVE-2026-34003",
      "title": "xorg-x11-server-common: X.Org is an open-source implementation of the X Window System",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.0025,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T12:40:37Z"
}