{
  "cveId": "CVE-2026-55453",
  "url": "https://patchblox.com/security/cve/CVE-2026-55453",
  "summary": "CVE-2026-55453 is fixed in 15 products on 1 platform, first by ALAS2023-2026-3415, released November 10, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "CUPS ipp backend status-line injection can update queue PPD and lead to conditional RCE as lp via foomatic-rip",
  "description": "A malicious or attacker-controlled IPP printer can return a crafted text printer-status attribute, such as marker-message, containing embedded newline characters. The CUPS ipp backend reports this remote printer attribute to the scheduler through the backend stderr/status stream. The current quoting helper escapes quotes and backslashes, but it does not reject or encode LF/CR. As a result, attacker-controlled printer status text can create a new backend status line beginning with PPD:.",
  "published": "2026-10-17T01:01:47Z",
  "severity": "Low",
  "cvss": 3.3,
  "cwe": "Improper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027)",
  "epss": 0.00195,
  "epssPercentile": 0.09268,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55453",
  "fixes": [
    {
      "platform": "linux",
      "product": "cups",
      "release": "amzn 2023",
      "fixedVersion": "1:2.4.20-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3415",
      "released": "2026-11-10T03:55:23Z"
    },
    {
      "platform": "linux",
      "product": "cups-client",
      "release": "amzn 2023",
      "fixedVersion": "1:2.4.20-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3415",
      "released": "2026-11-10T03:55:23Z"
    },
    {
      "platform": "linux",
      "product": "cups-client-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:2.4.20-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3415",
      "released": "2026-11-10T03:55:23Z"
    },
    {
      "platform": "linux",
      "product": "cups-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:2.4.20-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3415",
      "released": "2026-11-10T03:55:23Z"
    },
    {
      "platform": "linux",
      "product": "cups-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1:2.4.20-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3415",
      "released": "2026-11-10T03:55:23Z"
    },
    {
      "platform": "linux",
      "product": "cups-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:2.4.20-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3415",
      "released": "2026-11-10T03:55:23Z"
    },
    {
      "platform": "linux",
      "product": "cups-filesystem",
      "release": "amzn 2023",
      "fixedVersion": "1:2.4.20-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3415",
      "released": "2026-11-10T03:55:23Z"
    },
    {
      "platform": "linux",
      "product": "cups-ipptool",
      "release": "amzn 2023",
      "fixedVersion": "1:2.4.20-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3415",
      "released": "2026-11-10T03:55:23Z"
    },
    {
      "platform": "linux",
      "product": "cups-ipptool-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:2.4.20-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3415",
      "released": "2026-11-10T03:55:23Z"
    },
    {
      "platform": "linux",
      "product": "cups-libs",
      "release": "amzn 2023",
      "fixedVersion": "1:2.4.20-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3415",
      "released": "2026-11-10T03:55:23Z"
    },
    {
      "platform": "linux",
      "product": "cups-libs-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:2.4.20-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3415",
      "released": "2026-11-10T03:55:23Z"
    },
    {
      "platform": "linux",
      "product": "cups-lpd",
      "release": "amzn 2023",
      "fixedVersion": "1:2.4.20-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3415",
      "released": "2026-11-10T03:55:23Z"
    },
    {
      "platform": "linux",
      "product": "cups-lpd-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:2.4.20-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3415",
      "released": "2026-11-10T03:55:23Z"
    },
    {
      "platform": "linux",
      "product": "cups-printerapp",
      "release": "amzn 2023",
      "fixedVersion": "1:2.4.20-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3415",
      "released": "2026-11-10T03:55:23Z"
    },
    {
      "platform": "linux",
      "product": "cups-printerapp-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:2.4.20-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3415",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3415",
      "released": "2026-11-10T03:55:23Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-11T13:47:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}