{"id":"CVE-2024-26150","aliases":["EUVD-2024-0471","GHSA-2fc9-xpp8-2g9h"],"status":"published","title":"`@backstage/backend-common` vulnerable to path traversal through symlinks","description":"`@backstage/backend-common` is a common functionality library for backends for Backstage, an open platform for building developer portals. In `@backstage/backend-common` prior to versions 0.21.1, 0.20.2, and 0.19.10, paths checks with the `resolveSafeChildPath` utility were not exhaustive enough, leading to risk of path traversal vulnerabilities if symlinks can be injected by attackers. This issue is patched in `@backstage/backend-common` versions 0.21.1, 0.20.2, and 0.19.10.","severity":{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00801,"percentile":0.57104,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22"],"published":"2024-02-23T15:46:35Z","modified":"2026-10-28T02:31:09Z","fixes":[{"ecosystem":"npm","package":"@backstage/backend-common","fixed_in":["0.21.1","0.19.10","0.20.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@backstage/backend-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.21.0"},{"last_affected":"0.21.0"},{"fixed":"0.21.1"}]}],"versions":["0.21.0"]},{"source":"ghsa","ecosystem":"npm","package":"@backstage/backend-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.19.10"}]}]},{"source":"ghsa","ecosystem":"npm","package":"@backstage/backend-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.20.0"},{"fixed":"0.20.2"}]}]},{"source":"osv","ecosystem":"npm","package":"@backstage/backend-common","ranges":[{"type":"SEMVER","events":[{"introduced":"0.21.0"},{"fixed":"0.21.1"}]}],"versions":["0.21.0"]},{"source":"osv","ecosystem":"npm","package":"@backstage/backend-common","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.19.10"}]}]},{"source":"osv","ecosystem":"npm","package":"@backstage/backend-common","ranges":[{"type":"SEMVER","events":[{"introduced":"0.20.0"},{"fixed":"0.20.2"}]}]}],"products":[{"vendor":"backstage","product":"backstage"},{"vendor":"linuxfoundation","product":"backstage_backend-common"}],"references":[{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-2fc9-xpp8-2g9h","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://github.com/backstage/backstage/commit/1ad2b1b61ebb430051f7d804b0cc7ebfe7922b6f","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://github.com/backstage/backstage/commit/78f892b3a84d63de2ba167928f171154c447b717","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://github.com/backstage/backstage/commit/edf65d7d31e027599c2415f597d085ee84807871","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-26150","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-2fc9-xpp8-2g9h"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26150.json","tags":["advisory"]},{"url":"https://github.com/backstage/backstage","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-26150","title":"`@backstage/backend-common` vulnerable to path traversal through symlinks","description":"`@backstage/backend-common` is a common functionality library for backends for Backstage, an open platform for building developer portals. In `@backstage/backend-common` prior to versions 0.21.1, 0.20.2, and 0.19.10, paths checks with the `resolveSafeChildPath` utility were not exhaustive enough, leading to risk of path traversal vulnerabilities if symlinks can be injected by attackers. This issue is patched in `@backstage/backend-common` versions 0.21.1, 0.20.2, and 0.19.10.","status":"published","published":"2024-02-23T15:46:35.731Z","modified":"2024-08-01T23:59:32.589Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:33:59.884489Z"}],"euvd":[{"id":"EUVD-2024-0471","description":"`@backstage/backend-common` is a common functionality library for backends for Backstage, an open platform for building developer portals. In `@backstage/backend-common` prior to versions 0.21.1, 0.20.2, and 0.19.10, paths checks with the `resolveSafeChildPath` utility were not exhaustive enough, leading to risk of path traversal vulnerabilities if symlinks can be injected by attackers. This issue is patched in `@backstage/backend-common` versions 0.21.1, 0.20.2, and 0.19.10.","status":"published","published":"2024-02-23T15:46:35Z","modified":"2024-08-01T23:59:32Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T03:50:27.742015Z"}],"ghsa":[{"id":"GHSA-2fc9-xpp8-2g9h","title":"`@backstage/backend-common` vulnerable to path traversal through symlinks","description":"### Impact\n\nPaths checks with the `resolveSafeChildPath` utility were not exhaustive enough, leading to risk of path traversal vulnerabilities if symlinks can be injected by attackers.\n\n### Patches\nPatched in `@backstage/backend-common` version `0.21.1`.\nPatched in `@backstage/backend-common` version `0.20.2`.\nPatched in `@backstage/backend-common` version `0.19.10`.\n\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 Discord, linked to in [Backstage README](https://github.com/backstage/backstage)\n","status":"published","published":"2024-02-23T18:02:08Z","modified":"2026-03-24T05:05:03Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:39:40.633038Z"}],"nvd":[{"id":"CVE-2024-26150","description":"`@backstage/backend-common` is a common functionality library for backends for Backstage, an open platform for building developer portals. In `@backstage/backend-common` prior to versions 0.21.1, 0.20.2, and 0.19.10, paths checks with the `resolveSafeChildPath` utility were not exhaustive enough, leading to risk of path traversal vulnerabilities if symlinks can be injected by attackers. This issue is patched in `@backstage/backend-common` versions 0.21.1, 0.20.2, and 0.19.10.","status":"published","published":"2024-02-23T16:15:48.57Z","modified":"2026-06-17T07:17:12.267Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:09:37.655131Z"}],"osv":[{"id":"CVE-2024-26150","title":"`@backstage/backend-common` vulnerable to path traversal through symlinks","description":"`@backstage/backend-common` is a common functionality library for backends for Backstage, an open platform for building developer portals. In `@backstage/backend-common` prior to versions 0.21.1, 0.20.2, and 0.19.10, paths checks with the `resolveSafeChildPath` utility were not exhaustive enough, leading to risk of path traversal vulnerabilities if symlinks can be injected by attackers. This issue is patched in `@backstage/backend-common` versions 0.21.1, 0.20.2, and 0.19.10.","status":"published","published":"2024-02-23T15:46:35.731Z","modified":"2026-10-28T02:31:09.543841783Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:44:39.244433Z"},{"id":"GHSA-2fc9-xpp8-2g9h","title":"`@backstage/backend-common` vulnerable to path traversal through symlinks","description":"### Impact\n\nPaths checks with the `resolveSafeChildPath` utility were not exhaustive enough, leading to risk of path traversal vulnerabilities if symlinks can be injected by attackers.\n\n### Patches\nPatched in `@backstage/backend-common` version `0.21.1`.\nPatched in `@backstage/backend-common` version `0.20.2`.\nPatched in `@backstage/backend-common` version `0.19.10`.\n\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 Discord, linked to in [Backstage README](https://github.com/backstage/backstage)\n","status":"published","published":"2024-02-23T18:02:08Z","modified":"2026-09-10T03:50:05.254089104Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:46:34.338541Z"}]}}