{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.4.0"
              },
              {
                "fixed": "1.1.0"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "2514a3dd7bdd29d0d1e3cd4021ec92fc37410cdd"
            },
            {
              "fixed": "685e23efc81afd9bc921d4afa984fff34c4b7e55"
            },
            {
              "fixed": "6ee03f1c738d4436dde1b066cf65c80663d489f5"
            }
          ],
          "repo": "https://github.com/phenixdigital/phoenix_storybook",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-mrhx-6pw9-q5fh"
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47068.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "8c2c97b0f505780fee4069988bf86736f51d35d7"
          },
          {
            "fixed": "6ee03f1c738d4436dde1b066cf65c80663d489f5"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Authorization Bypass Through User-Controlled Key vulnerability in phenixdigital phoenix_storybook allows cross-session PubSub topic injection via a URL query parameter.\n\n'Elixir.PhoenixStorybook.Story.ComponentIframeLive':handle_params/3 in lib/phoenix_storybook/live/story/component_iframe_live.ex reads a PubSub topic directly from params[\"topic\"] and broadcasts {:component_iframe_pid, self()} on it with no check that the topic belongs to the requesting session. The shared PhoenixStorybook.PubSub is used to coordinate playground LiveViews with their iframes: a playground subscribes to a session-specific topic and uses the received iframe pid to direct subsequent control messages (variation state, theme switches, extra-assign payloads) via send/2. Because the iframe trusts the query parameter, an attacker who loads /storybook/iframe/\u003cstory\u003e?topic=\u003cvictim_topic\u003e causes their iframe process pid to be announced on the victim's topic. The victim's playground then addresses its private messages to the attacker's iframe process.\n\nThis issue affects phoenix_storybook from 0.4.0 before 1.1.0.",
  "id": "CVE-2026-47068",
  "modified": "2026-07-08T05:39:15.524940960Z",
  "published": "2026-05-20T13:35:33.215Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-47068.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-47068"
    },
    {
      "type": "WEB",
      "url": "https://repo.hex.pm"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47068.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/phenixdigital/phoenix_storybook/security/advisories/GHSA-mrhx-6pw9-q5fh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47068"
    },
    {
      "type": "FIX",
      "url": "https://github.com/phenixdigital/phoenix_storybook/commit/6ee03f1c738d4436dde1b066cf65c80663d489f5"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/phenixdigital/phoenix_storybook"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Cross-session PubSub topic injection via URL parameter in phoenix_storybook"
}