CVE-2026-82416

{
  "etk_id": "ETK-2026-1491",
  "cve_id": "CVE-2026-82416",
  "display_id": "CVE-2026-82416",
  "ghsa_id": "GHSA-v3ph-cgqh-r8p5",
  "euvd_id": "EUVD-2026-98911",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Cross-request session exposure in FrankenPHP worker mode",
  "summary": "FrankenPHP worker-mode deployments can reuse a session identifier across requests when PHP's session extension is installed as a shared module. A concurrent client may be associated with another user's session, enabling session exposure or takeover; statically linked session-extension builds are not affected.",
  "mitigation": "Upgrade FrankenPHP to 1.12.5 or later. Until upgraded, use a build with the PHP session extension statically linked, or clear the session identifier after closing each worker request's session.",
  "vendor": "go",
  "product": "go:github.com/dunglas/frankenphp",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 1.12.4"
      ],
      "ecosystem": "go",
      "fixed_versions": [],
      "package_name": "github.com/dunglas/frankenphp",
      "purl": "pkg:golang/github.com/dunglas/frankenphp"
    }
  ],
  "cwes": [
    362
  ],
  "cvss_score": 7.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
  "epss_score": 0.0023,
  "epss_percentile": 0.1269,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 34.22166966666666,
  "t0_at": "2026-10-13T16:20:53.439000+00:00",
  "signals": {
    "public_poc": {
      "at": "2026-07-18T13:45:42+00:00",
      "days": -87.10777128472222,
      "is_lower_bound": false,
      "measured_at": "2026-10-13T16:20:53.439000+00:00",
      "url": "https://github.com/php/frankenphp/security/advisories/GHSA-v3ph-cgqh-r8p5"
    },
    "trigger_signal": {
      "at": "2026-10-13T16:20:53.439000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-13T16:20:53.439000+00:00",
      "url": "https://github.com/php/frankenphp/security/advisories/GHSA-v3ph-cgqh-r8p5"
    }
  }
}