{"id":"GHSA-7mfx-xg57-53c9","summary":"Backstage: Improper input validation in TechDocs static content requests","details":"### Impact\n\nWhen using the Azure Blob Storage provider, an authenticated Backstage user may be able to read restricted TechDocs content when entity-level permissions are enabled. Deployments that intentionally disable the default backend authentication policy may have broader exposure.\n\n### Patches\n\nPatched in `@backstage/plugin-techdocs-backend` version `2.2.4`\n\n### Workarounds\n\n- Restrict access to the TechDocs backend to users who are permitted to view all stored documentation until an upgrade can be applied.\n- Keep the default backend authentication policy enabled.","aliases":["CVE-2026-106490"],"modified":"2026-10-07T18:15:13.170035612Z","published":"2026-10-07T18:00:00Z","database_specific":{"nvd_published_at":"2026-10-06T21:17:17Z","cwe_ids":["CWE-22","CWE-23"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-10-07T18:00:00Z"},"references":[{"type":"WEB","url":"https://github.com/backstage/backstage/security/advisories/GHSA-7mfx-xg57-53c9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106490"},{"type":"WEB","url":"https://github.com/backstage/backstage/commit/40ecc4c2e88b0218125b0a3405d1f6315b321974"},{"type":"PACKAGE","url":"https://github.com/backstage/backstage"},{"type":"WEB","url":"https://github.com/backstage/backstage/releases/tag/v1.54.6"}],"affected":[{"package":{"name":"@backstage/plugin-techdocs-backend","ecosystem":"npm","purl":"pkg:npm/%40backstage/plugin-techdocs-backend"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.2.4"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-7mfx-xg57-53c9/GHSA-7mfx-xg57-53c9.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}