CVE-2026-86696

{
  "etk_id": "ETK-2026-2421",
  "cve_id": "CVE-2026-86696",
  "display_id": "CVE-2026-86696",
  "ghsa_id": "GHSA-5rc7-wrfq-2h25",
  "euvd_id": "EUVD-2026-108051",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Atom-table resource exhaustion in esaml",
  "summary": "esaml 0.1.0 and later can exhaust the Erlang VM atom table while processing logout responses. An unauthenticated remote attacker may crash a node if they can send unsigned requests to a reachable single-logout endpoint.",
  "mitigation": "Disable public access to the single-logout endpoint, or restrict it to trusted identity-provider sources, until an upstream fixed release is identified. Reject unsigned logout responses at an enforcing proxy or application boundary where possible.",
  "vendor": "handnot2",
  "product": "esaml",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= be692b56245071899757afa7ef47e43593d3de96, < *"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "*"
      ],
      "package_name": "handnot2/esaml",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= be692b56245071899757afa7ef47e43593d3de96, < *"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "*"
      ],
      "package_name": "arekinath/esaml",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0.1.0, < *"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "*"
      ],
      "package_name": "esaml",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= be692b56245071899757afa7ef47e43593d3de96, < *"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "*"
      ],
      "package_name": "dropbox/esaml",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 8.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 12.300425816666667,
  "t0_at": "2026-10-22T06:59:07.680000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-22T11:00:44.320829+00:00",
      "days": 0.1677851947800926,
      "is_lower_bound": false,
      "measured_at": "2026-10-22T06:59:07.680000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-22T06:59:07.680000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-22T06:59:07.680000+00:00",
      "url": "https://github.com/advisories/GHSA-5rc7-wrfq-2h25"
    }
  }
}