{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@backstage/plugin-techdocs-node"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "@backstage/techdocs-common"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.11.16"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": true,
    "github_reviewed_at": "2022-06-17T01:11:10Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\nA malicious actor with the ability to register entities in the Software Catalog is able to write files to arbitrary paths on the techdocs backend host instance when `techdocs.publisher.type` is set to `local`.\n\nThis vulnerability is mitigated by the fact that the Software Catalog must be configured with non-standard field format validators and/or non-standard entity policies.\n\n### Patches\nThose affected are advised to upgrade to `@backstage/plugin-techdocs-node` version `1.1.2` or higher.\n\n### Workarounds\nIf patching or upgrading is not possible, it would be sufficient to update any custom Catalog field format validators and/or custom entity policies to disallow entity names, kinds, and namespaces containing `..`\n\n\u003c!--\n### References\ntodo: Link to blog post / published report.\n--\u003e\n\n### For more information\nIf you have any questions or comments about this advisory:\n\n- Open an issue in the [Backstage repository](https://github.com/backstage/backstage)\n- Visit our chat, linked to in the [Backstage README](https://github.com/backstage/backstage)",
  "id": "GHSA-4jqc-jvh2-pxg9",
  "modified": "2022-06-17T01:11:10Z",
  "published": "2022-06-17T01:11:10Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/backstage/backstage/security/advisories/GHSA-4jqc-jvh2-pxg9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/backstage/backstage/commit/429c9f9daa5654dd1b996aa85f7264eb23a2e4fa"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/backstage/backstage"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "Path traversal for local publishers in TechDocs backend"
}