{
  "cveId": "CVE-2026-81849",
  "url": "https://patchblox.com/security/cve/CVE-2026-81849",
  "summary": "CVE-2026-81849 is fixed in amazon-ssm-agent on 1 platform by ALAS2023-2026-1813 (version 3.3.4515.0-1.amzn2023), released June 8, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "amazon-ssm-agent: Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities:\nCVE-2026-81849:\n\tImproper...",
  "description": "Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities:\nCVE-2026-81849:\n\tImproper limitation of a pathname to a restricted directory in the aws:downloadContent plugin in amazon-ssm-agent before 3.3.4515.0 might allow an authenticated remote user whose ssm:SendCommand permission is restricted to the AWS-DownloadContent document, to write arbitrary files outside the intended download directory with root privileges, via crafted object keys in the S3 source the document is directed to retrieve. This issue may lead to arbitrary code execution as root if specific sensitive files are overwritten.\n\n\n\nTo remediate this issue, customers should upgrade amazon-ssm-agent to version 3.3.4515.0 or later.\n\nCVE-2026-33814:\n\tWhen processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.",
  "published": "2026-06-08T09:00:00Z",
  "severity": "important",
  "epss": 0.00899,
  "epssPercentile": 0.59876,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "amazon-ssm-agent",
      "release": "amzn 2023",
      "fixedVersion": "3.3.4515.0-1.amzn2023",
      "fix": "ALAS2023-2026-1813",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1813",
      "released": "2026-06-08T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}