{
  "cveId": "CVE-2026-6668",
  "url": "https://patchblox.com/security/cve/CVE-2026-6668",
  "summary": "CVE-2026-6668 is fixed in pgbouncer on 1 platform by DEBIAN-CVE-2026-6668 (version 1.26.0-1), released October 4, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Integer overflow causes an infinite loop in packet buffer growth in PgBouncer",
  "description": "Integer overflow in the packet buffer growth logic in PgBouncer through 1.25.2 allows an unauthenticated remote attacker to cause a denial of service. Sufficiently large input makes the buffer size computation overflow, leaving the growth loop unable to terminate. Because PgBouncer serves all clients from a single process, this saturates a CPU core and stalls every pooled connection until the process is killed. Both unauthenticated and authenticated code paths can reach the overflow.",
  "published": "2026-09-23T17:17:16Z",
  "severity": "Important",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "cwe": "Integer Overflow or Wraparound",
  "epss": 0.00573,
  "epssPercentile": 0.47594,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-6668",
  "fixes": [
    {
      "platform": "linux",
      "product": "pgbouncer",
      "release": "Debian 14",
      "fixedVersion": "1.26.0-1",
      "fix": "DEBIAN-CVE-2026-6668",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-6668",
      "released": "2026-10-04T21:29:23Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}