{"schema_version":"1.9.0","id":"GHSA-7649-wm97-w3j3","published":"2026-10-07T17:59:38Z","modified":"2026-10-07T18:15:12.777641885Z","aliases":["CVE-2026-106494"],"summary":"Backstage: Improper input validation in cloud storage URL readers","details":"### Impact\n\nAn attacker with write access to a cloud storage bucket used by Backstage could craft object names that could collide with protected files in the output directory. In certain deployment configurations, this could lead to content injection.\n\n### Patches\n\nPatched in `@backstage/backend-defaults` version `0.17.8`","affected":[{"package":{"name":"@backstage/backend-defaults","ecosystem":"npm","purl":"pkg:npm/%40backstage/backend-defaults"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.17.8"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-7649-wm97-w3j3/GHSA-7649-wm97-w3j3.json"}}],"references":[{"type":"WEB","url":"https://github.com/backstage/backstage/security/advisories/GHSA-7649-wm97-w3j3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106494"},{"type":"WEB","url":"https://github.com/backstage/backstage/commit/14e925ce5b905dd8daa64c3009722febda76034c"},{"type":"PACKAGE","url":"https://github.com/backstage/backstage"},{"type":"WEB","url":"https://github.com/backstage/backstage/releases/tag/v1.54.6"}],"database_specific":{"cwe_ids":["CWE-22","CWE-73"],"github_reviewed":true,"github_reviewed_at":"2026-10-07T17:59:38Z","nvd_published_at":"2026-10-06T21:17:18Z","severity":"MODERATE"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N"}]}