CVE-2026-103957

{
  "etk_id": "ETK-2026-394",
  "cve_id": "CVE-2026-103957",
  "display_id": "CVE-2026-103957",
  "ghsa_id": "GHSA-jcxf-gpf4-58hm",
  "euvd_id": "EUVD-2026-91772",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Server-side request forgery in AWS loom OAuth2 discovery",
  "summary": "AWS loom versions before 1.7.0 mishandle OAuth2 discovery addresses used for delegated-authentication tool servers or remote agents. An authenticated user with registration access may induce requests to internal network locations and potentially obtain another deployment user's access token.",
  "mitigation": "Upgrade loom to version 1.7.0 or later. Restrict tool-server and remote-agent registration to trusted administrators until the update is applied.",
  "vendor": "AWS",
  "product": "loom",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<1.7.0"
      ],
      "ecosystem": "loom for aws",
      "fixed_versions": [
        "1.7.0"
      ],
      "package_name": null,
      "purl": null
    }
  ],
  "cwes": [
    918
  ],
  "cvss_score": 8.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N",
  "epss_score": 0.0038,
  "epss_percentile": 0.3041,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 17.747926616666668,
  "t0_at": "2026-10-02T19:06:52.707000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-02T19:06:52.707000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-02T19:06:52.707000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-103957"
    }
  }
}