{
  "cveId": "CVE-2026-107350",
  "url": "https://patchblox.com/security/cve/CVE-2026-107350",
  "summary": "CVE-2026-107350 is fixed in pgbouncer on 1 platform by DEBIAN-CVE-2026-107350 (version 1.26.1-1), released October 16, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Authentication bypass via second StartupMessage during SCRAM authentication in PgBouncer",
  "description": "Improper authentication in PgBouncer 1.17.0 through 1.26.0 allows a remote attacker who knows the password of a user listed in auth_file to log in as any other user that authenticates using SCRAM, including PgBouncer admin users and backend superusers. A second StartupMessage sent during SCRAM authentication against a non-existent database is not rejected and switches the user being logged in as, while the SCRAM exchange is still verified against the keys of the first user.",
  "published": "2026-10-14T18:17:25Z",
  "severity": "Important",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "cwe": "Improper Authentication",
  "epss": 0.00369,
  "epssPercentile": 0.30935,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-107350",
  "fixes": [
    {
      "platform": "linux",
      "product": "pgbouncer",
      "release": "Debian 14",
      "fixedVersion": "1.26.1-1",
      "fix": "DEBIAN-CVE-2026-107350",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-107350",
      "released": "2026-10-16T15:52:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}