CVE-2026-105270

{
  "etk_id": "ETK-2026-2403",
  "cve_id": "CVE-2026-105270",
  "display_id": "CVE-2026-105270",
  "ghsa_id": "GHSA-6m7w-85hw-3q64",
  "euvd_id": "EUVD-2026-108035",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unbounded atom allocation in esaml SAML response parsing",
  "summary": "esaml versions beginning with 0.1.0 can allocate unreclaimable Erlang atoms while parsing SAML responses. An unauthenticated attacker may crash a node if its SAML ACS or single-logout endpoint accepts requests that reach the affected parser before signature validation.",
  "mitigation": "Upgrade arekinath/esaml, handnot2/esaml, esaml, or dropbox/esaml to the recorded fixed version `*`, as applicable. Restrict access to SAML ACS and single-logout endpoints to trusted identity providers until the upgrade is complete.",
  "vendor": "arekinath",
  "product": "esaml",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= deeb84378d5c82153b470e99d24f77c38afca14a, < *"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "*"
      ],
      "package_name": "arekinath/esaml",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= deeb84378d5c82153b470e99d24f77c38afca14a, < *"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "*"
      ],
      "package_name": "handnot2/esaml",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0.1.0, < *"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "*"
      ],
      "package_name": "esaml",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= deeb84378d5c82153b470e99d24f77c38afca14a, < *"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "*"
      ],
      "package_name": "dropbox/esaml",
      "purl": null
    }
  ],
  "cwes": [
    770
  ],
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 10.1641931,
  "t0_at": "2026-10-22T06:58:43.034000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-22T08:13:34.475675+00:00",
      "days": 0.05198427864583333,
      "is_lower_bound": false,
      "measured_at": "2026-10-22T06:58:43.034000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-22T06:58:43.034000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-22T06:58:43.034000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-105270"
    }
  }
}