{
  "cveId": "CVE-2026-57178",
  "url": "https://patchblox.com/security/cve/CVE-2026-57178",
  "summary": "CVE-2026-57178 is fixed in social-auth-core on 1 platform by DEBIAN-CVE-2026-57178 (version 5.0.2-1), released September 26, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "social-auth-core: Python Social Auth is a social authentication/registration mechanism",
  "description": "Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the \u0060vk-app\u0060 backend accepted VK application callback data without verifying the callback signature when the \u0060auth_key\u0060 parameter was omitted. Applications using this backend could treat unsigned attacker-controlled data as a verified VK identity. An attacker could choose callback fields such as \u0060viewer_id\u0060, \u0060access_token\u0060, \u0060api_id\u0060, and \u0060api_result\u0060, potentially allowing authentication as an arbitrary VK user ID. The issue affects only applications using the \u0060vk-app\u0060 backend. The issue has been fixed in version 5.0.0 by requiring \u0060auth_key\u0060 to be present and valid before callback data is trusted.",
  "published": "2026-09-24T18:17:14Z",
  "severity": "high",
  "cvss": 7.4,
  "cvssVector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "epss": 0.0016,
  "epssPercentile": 0.05225,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "social-auth-core",
      "release": "Debian 14",
      "fixedVersion": "5.0.2-1",
      "fix": "DEBIAN-CVE-2026-57178",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-57178",
      "released": "2026-09-26T19:52:05Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}