{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-24046",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-24046",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-01-21T22:36:30.794Z",
    "updatedAt": "2026-07-15T01:17:34.920Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Backstage has a Possible Symlink Path Traversal in Scaffolder Actions",
      "summary": "Backstage is an open framework for building developer portals. Multiple Scaffolder actions and archive extraction utilities were vulnerable to symlink-based path traversal attacks. An attacker with access to create and execute Scaffolder templates could exploit symlinks to read arbitrary files via the `debug:log` action by creating a symlink pointing to sensitive files (e.g., `/etc/passwd`, configuration files, secrets); delete arbitrary files via the `fs:delete` action by creating symlinks pointing outside the workspace, and write files outside the workspace via archive extraction (tar/zip) containing malicious symlinks. This affects any Backstage deployment where users can create or execute Scaffolder templates. This vulnerability is fixed in `@backstage/backend-defaults` versions 0.12.2, 0.13.2, 0.14.1, and 0.15.0; `@backstage/plugin-scaffolder-backend` versions 2.2.2, 3.0.2, and 3.1.1; and `@backstage/plugin-scaffolder-node` versions 0.11.2 and 0.12.3. Users should upgrade to these versions or later. Some workarounds are available. Follow the recommendation in the Backstage Threat Model to limit access to creating and updating templates, restrict who can create and execute Scaffolder templates using the permissions framework, audit existing templates for symlink usage, and/or run Backstage in a containerized environment with limited filesystem access.",
      "affected": [
        {
          "vendor": "backstage",
          "product": "backstage",
          "versions": [
            {
              "version": "@backstage/backend-defaults < 0.12.2",
              "status": "affected"
            },
            {
              "version": "@backstage/backend-defaults >= 0.13.0, < 0.13.2",
              "status": "affected"
            },
            {
              "version": "@backstage/backend-defaults >= 0.14.0, < 0.14.1",
              "status": "affected"
            },
            {
              "version": "@backstage/plugin-scaffolder-backend < 2.2.2",
              "status": "affected"
            },
            {
              "version": "@backstage/plugin-scaffolder-backend >= 3.0.0, < 3.0.2",
              "status": "affected"
            },
            {
              "version": "@backstage/plugin-scaffolder-backend >= 3.1.0, < 3.1.1",
              "status": "affected"
            },
            {
              "version": "@backstage/plugin-scaffolder-node < 0.11.2",
              "status": "affected"
            },
            {
              "version": "@backstage/plugin-scaffolder-node >= 0.12.0, < 0.12.3",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}