{
  "fix": "ALAS2023-2026-3131",
  "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3131",
  "summary": "ALAS2023-2026-3131, released September 28, 2026, fixes 37 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent.",
  "platform": "linux",
  "type": "advisory",
  "title": "Security update for 4 packages",
  "released": "2026-09-28T09:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2026-53791, rated Critical",
  "supported": true,
  "cveCount": 37,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00721,
  "maxCvss": 9.1,
  "vendorAdvisory": "https://alas.aws.amazon.com/AL2023/ALAS-2026-3131.html",
  "appliesTo": [
    {
      "product": "rsync",
      "productUrl": "https://patchblox.com/security/product/linux/rsync",
      "release": "amzn 2023",
      "fixedVersion": "3.5.1-1.amzn2023.0.1",
      "supported": true
    },
    {
      "product": "rsync-daemon",
      "productUrl": "https://patchblox.com/security/product/linux/rsync-daemon",
      "release": "amzn 2023",
      "fixedVersion": "3.5.1-1.amzn2023.0.1",
      "supported": true
    },
    {
      "product": "rsync-debuginfo",
      "productUrl": "https://patchblox.com/security/product/linux/rsync-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "3.5.1-1.amzn2023.0.1",
      "supported": true
    },
    {
      "product": "rsync-debugsource",
      "productUrl": "https://patchblox.com/security/product/linux/rsync-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "3.5.1-1.amzn2023.0.1",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-53791",
      "url": "https://patchblox.com/security/cve/CVE-2026-53791",
      "title": "rsync \u003C 3.5.0 Daemon IP Spoofing via PROXY Protocol Header",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 9.1,
      "epss": 0.00501,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-70460",
      "url": "https://patchblox.com/security/cve/CVE-2026-70460",
      "title": "rsync 2.3.3 \u003C 3.5.0 Path Traversal via --partial-dir/--backup-dir Symlink",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.2,
      "epss": 0.00448,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-70452",
      "url": "https://patchblox.com/security/cve/CVE-2026-70452",
      "title": "rsync 3.1.0 \u003C 3.5.0 Access Control Bypass via DNS Resolution Failure",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.2,
      "epss": 0.00439,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-70464",
      "url": "https://patchblox.com/security/cve/CVE-2026-70464",
      "title": "rsync 2.0.0 \u003C 3.5.0 Connection Slot Exhaustion DoS via Handshake Stall",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.2,
      "epss": 0.00641,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53790",
      "url": "https://patchblox.com/security/cve/CVE-2026-53790",
      "title": "rsync \u003C 3.5.0 Command Injection via Multiple Code Paths",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.2,
      "epss": 0.00629,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-70453",
      "url": "https://patchblox.com/security/cve/CVE-2026-70453",
      "title": "rsync \u003C 3.5.0 Algorithmic Complexity DoS via hash_search()",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.2,
      "epss": 0.00587,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-70461",
      "url": "https://patchblox.com/security/cve/CVE-2026-70461",
      "title": "rsync 3.2.5 \u003C 3.5.0 Heap Out-of-Bounds Write via files-from Entry",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.2,
      "epss": 0.0057,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-70456",
      "url": "https://patchblox.com/security/cve/CVE-2026-70456",
      "title": "rsync 3.0.1 \u003C 3.5.0 Heap Out-of-Bounds Write via read_args()",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.2,
      "epss": 0.00443,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-70458",
      "url": "https://patchblox.com/security/cve/CVE-2026-70458",
      "title": "rsync 3.0.0 \u003C 3.5.0 Out-of-Bounds Write via FLAG_HLINKED Handling",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.2,
      "epss": 0.00443,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53783",
      "url": "https://patchblox.com/security/cve/CVE-2026-53783",
      "title": "rsync \u003C 3.5.0 TOCTOU Race Condition Directory Escape via rrsync",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.2,
      "epss": 0.00428,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53795",
      "url": "https://patchblox.com/security/cve/CVE-2026-53795",
      "title": "rsync \u003C 3.5.0 Arbitrary File Write via --temp-dir/--link-dest",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.2,
      "epss": 0.00396,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-70457",
      "url": "https://patchblox.com/security/cve/CVE-2026-70457",
      "title": "rsync 3.2.3\u00A0\u003C 3.5.0 Out-of-Bounds Write via parse_size_arg()",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 8.2,
      "epss": 0.00377,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53793",
      "url": "https://patchblox.com/security/cve/CVE-2026-53793",
      "title": "rsync \u003C 3.5.0 Path Confinement Bypass via /./ Boundary Marker in Chroot Mode",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.2,
      "epss": 0.00373,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-70463",
      "url": "https://patchblox.com/security/cve/CVE-2026-70463",
      "title": "rsync: rsync 3.1.0 before 3.5.0\u00A0contains an authorization bypass in auth users directive parsing",
      "priority": "High",
      "severity": "important",
      "cvss": 8.2,
      "epss": 0.00364,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53789",
      "url": "https://patchblox.com/security/cve/CVE-2026-53789",
      "title": "rsync \u003C 3.5.0 Arbitrary File Deletion via Malicious File List",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 8.2,
      "epss": 0.00357,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53784",
      "url": "https://patchblox.com/security/cve/CVE-2026-53784",
      "title": "rsync \u003C 3.5.0 Path Traversal via Symlink Module Root",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.2,
      "epss": 0.00238,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53802",
      "url": "https://patchblox.com/security/cve/CVE-2026-53802",
      "title": "rsync \u003C 3.5.0 Arbitrary File Read via Symlink Following",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.2,
      "epss": 0.00238,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53785",
      "url": "https://patchblox.com/security/cve/CVE-2026-53785",
      "title": "rsync \u003C 3.5.0 Path Traversal Write Escape via --relative Mode",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.2,
      "epss": 0.00236,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53803",
      "url": "https://patchblox.com/security/cve/CVE-2026-53803",
      "title": "rsync \u003C 3.5.0 Symlink Following Arbitrary File Overwrite",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.2,
      "epss": 0.00229,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-70454",
      "url": "https://patchblox.com/security/cve/CVE-2026-70454",
      "title": "rsync \u003C 3.5.0 TLS Certificate Validation Bypass via SSL/OpenSSL Mode",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.2,
      "epss": 0.0019,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-29518",
      "url": "https://patchblox.com/security/cve/CVE-2026-29518",
      "title": "Rsync \u003C 3.4.3 TOCTOU Race Condition Allows Symlink-Based Arbitrary File Write",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.1,
      "epss": 0.00152,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-70459",
      "url": "https://patchblox.com/security/cve/CVE-2026-70459",
      "title": "rsync 3.0.0 \u003C 3.5.0 Daemon Crash via Malformed File List Entry",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 5.3,
      "epss": 0.00721,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53794",
      "url": "https://patchblox.com/security/cve/CVE-2026-53794",
      "title": "rsync \u003C 3.5.0 Denial of Service via --max-alloc=0 Logic Error",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 5.3,
      "epss": 0.00573,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-43620",
      "url": "https://patchblox.com/security/cve/CVE-2026-43620",
      "title": "Rsync \u003C 3.4.3 Out-of-Bounds Array Read via recv_files()",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6.5,
      "epss": 0.00428,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53798",
      "url": "https://patchblox.com/security/cve/CVE-2026-53798",
      "title": "rsync \u003C 3.5.0 Privilege Confusion via name-converter uid/gid mapping",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 5.3,
      "epss": 0.00428,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53786",
      "url": "https://patchblox.com/security/cve/CVE-2026-53786",
      "title": "rsync \u003C 3.5.0 Filter Rule Bypass via --filter Merge Directive",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6.5,
      "epss": 0.00398,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53792",
      "url": "https://patchblox.com/security/cve/CVE-2026-53792",
      "title": "rsync \u003C 3.5.0 Out-of-Bounds Read via Zero-Length Checksum Block",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6.5,
      "epss": 0.00347,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-45232",
      "url": "https://patchblox.com/security/cve/CVE-2026-45232",
      "title": "Rsync \u003C 3.4.3 Off-by-One Stack Write via HTTP Proxy",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 3.7,
      "epss": 0.00337,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53788",
      "url": "https://patchblox.com/security/cve/CVE-2026-53788",
      "title": "rsync \u003C 3.5.0 Newline Injection via name-converter uid/gid mapping",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6.5,
      "epss": 0.00304,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-70462",
      "url": "https://patchblox.com/security/cve/CVE-2026-70462",
      "title": "rsync 3.1.0 \u003C 3.5.0\u00A0Signed Integer Overflow via MSG_IO_TIMEOUT",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6.5,
      "epss": 0.0029,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53801",
      "url": "https://patchblox.com/security/cve/CVE-2026-53801",
      "title": "rsync \u003C 3.5.0 Symlink Race Condition Directory Traversal",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 5.9,
      "epss": 0.00286,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-43617",
      "url": "https://patchblox.com/security/cve/CVE-2026-43617",
      "title": "Rsync \u003C 3.4.3 Authorization Bypass via Hostname Resolution",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 4.8,
      "epss": 0.00282,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53796",
      "url": "https://patchblox.com/security/cve/CVE-2026-53796",
      "title": "rsync \u003C 3.5.0 TOCTOU Race Condition via Destination Directory Handling",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6.3,
      "epss": 0.00146,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53797",
      "url": "https://patchblox.com/security/cve/CVE-2026-53797",
      "title": "rsync \u003C 3.5.0 Symlink Race Condition Information Disclosure",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 4.7,
      "epss": 0.00143,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53800",
      "url": "https://patchblox.com/security/cve/CVE-2026-53800",
      "title": "rsync \u003C 3.5.0 Symlink Race Condition via --remove-source-files",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 4.7,
      "epss": 0.00142,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-43619",
      "url": "https://patchblox.com/security/cve/CVE-2026-43619",
      "title": "Rsync \u003C 3.4.3 Symlink Race Condition via Path-Based Syscalls",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6.3,
      "epss": 0.00136,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53799",
      "url": "https://patchblox.com/security/cve/CVE-2026-53799",
      "title": "rsync \u003C 3.5.0 Symlink Race Condition via ACL/xattr Application",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6.3,
      "epss": 0.00122,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-10T13:56:55Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}