{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.2.0"
              },
              {
                "fixed": "1.1.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "bbbf72db13cc5c866073d58fc65009700b775f4f"
            },
            {
              "fixed": "685e23efc81afd9bc921d4afa984fff34c4b7e55"
            }
          ],
          "repo": "https://github.com/phenixdigital/phoenix_storybook",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-833p-95jq-929q"
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8469.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "0228669d55c23a754d1ef11f49a32121129d5395"
          },
          {
            "fixed": "96d524690af0fe197a49f60d18e564a620b9ef81"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Allocation of Resources Without Limits or Throttling vulnerability in phenixdigital phoenix_storybook allows unauthenticated denial-of-service via BEAM atom table exhaustion.\n\nMultiple LiveView event handlers convert user-supplied event parameter strings to atoms using String.to_atom/1 without validation: 'Elixir.PhoenixStorybook.ExtraAssignsHelpers':handle_set_variation_assign/3 interns every key of the psb-assign params map; 'Elixir.PhoenixStorybook.ExtraAssignsHelpers':handle_toggle_variation_assign/3 interns the \"attr\" value from psb-toggle events; 'Elixir.PhoenixStorybook.ExtraAssignsHelpers':to_variation_id/2 interns elements of \"variation_id\"; and 'Elixir.PhoenixStorybook.ExtraAssignsHelpers':to_value/4 interns raw string values for attributes declared as :atom or :boolean. BEAM atoms are never garbage-collected, so each unique attacker-controlled string is a permanent allocation. Once the atom table ceiling (~1,048,576 atoms) is reached, the entire BEAM node aborts, taking down all applications running on it.\n\nThis issue affects phoenix_storybook from 0.2.0 before 1.1.0.",
  "id": "CVE-2026-8469",
  "modified": "2026-08-04T11:31:02.198286587Z",
  "published": "2026-05-20T13:35:27.914Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-8469.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-8469"
    },
    {
      "type": "WEB",
      "url": "https://repo.hex.pm"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8469.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/phenixdigital/phoenix_storybook/security/advisories/GHSA-833p-95jq-929q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8469"
    },
    {
      "type": "FIX",
      "url": "https://github.com/phenixdigital/phoenix_storybook/commit/96d524690af0fe197a49f60d18e564a620b9ef81"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/phenixdigital/phoenix_storybook"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Unauthenticated denial-of-service via BEAM atom table exhaustion in phoenix_storybook"
}