{
  "cveId": "CVE-2026-107348",
  "url": "https://patchblox.com/security/cve/CVE-2026-107348",
  "summary": "CVE-2026-107348 is fixed in pgbouncer on 1 platform by DEBIAN-CVE-2026-107348 (version 1.26.1-1), released October 16, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Integer overflow causes an infinite loop in message buffer growth in PgBouncer",
  "description": "Integer overflow in the message buffer growth logic (mbuf_make_room) in PgBouncer 1.21.0 through 1.26.0 allows a remote attacker to cause a denial of service when max_packet_size is configured above 2147483648. A packet header declaring a length above 2^31 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 restarted. Since 1.23.0 the overflow is reachable before authentication with a five-byte packet header.",
  "published": "2026-10-14T18:17:25Z",
  "severity": "Moderate",
  "cvss": 5.9,
  "cvssVector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "cwe": "Integer Overflow or Wraparound",
  "epss": 0.00392,
  "epssPercentile": 0.33537,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-107348",
  "fixes": [
    {
      "platform": "linux",
      "product": "pgbouncer",
      "release": "Debian 14",
      "fixedVersion": "1.26.1-1",
      "fix": "DEBIAN-CVE-2026-107348",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-107348",
      "released": "2026-10-16T15:52:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}