{
  "cveId": "CVE-2026-39894",
  "url": "https://patchblox.com/security/cve/CVE-2026-39894",
  "summary": "CVE-2026-39894 is fixed in cacti on 1 platform by DEBIAN-CVE-2026-39894 (version 1.2.31\u002Bds1-1), released July 14, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "cacti: Cacti is an open source performance and fault management framework",
  "description": "Cacti is an open source performance and fault management framework. In versions 1.2.30 and below, the locale-dependent decimal formatting in rrdtool_function_update() can corrupt RRDtool metric values. The rrdtool_function_update() function checks metric values with is_numeric() and concatenates them into the RRDtool update command via PHP string interpolation. PHP\u0027s string cast of floats is locale-sensitive: if LC_NUMERIC uses comma as decimal separator (e.g., de_DE), a value of 1.5 becomes \u00221,5\u0022. RRDtool expects . as decimal separator, causing metric data to shift into wrong columns or be silently dropped. No setlocale() reset is present in the update path. This causes a data integrity issue, but is not remotely exploitable; it requires server locale misconfiguration. The issue has been fixed in version 1.2.31.",
  "published": "2026-06-24T22:16:46Z",
  "severity": "low",
  "cvss": 2.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N",
  "epss": 0.00139,
  "epssPercentile": 0.03307,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "cacti",
      "release": "Debian 14",
      "fixedVersion": "1.2.31\u002Bds1-1",
      "fix": "DEBIAN-CVE-2026-39894",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-39894",
      "released": "2026-07-14T16:28:19Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}