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This issue is fixed in version 4.1.0.","state":0,"publishedAt":"2026-10-06T21:44:31.904+00:00","modifiedAt":"2026-10-07T17:06:30.804+00:00","affected":[{"ecosystem":"Vendor product","name":"backstage","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"backstage\",\n                    \"product\": \"backstage\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.54.6\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"plugin-scaffolder-backend","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"@backstage\",\n                    \"product\": \"plugin-scaffolder-backend\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 4.1.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/backstage/backstage/security/advisories/GHSA-vwp5-f99x-x3rq","https://github.com/backstage/backstage/commit/e673a869449874a9169e8f89852e75e862011b93","https://github.com/backstage/backstage/releases/tag/v1.54.6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-106506","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-106506","identifiers":["CVE-2026-106506"]},"retained":false,"historicalAffected":[]},{"revision":"e55d4627e94b4980adbf8c914b8bb340","observedAt":"2026-11-09T05:07:11.87+00:00","statement":{"source":"euvd","id":"EUVD-2026-94071","aliases":["CVE-2026-106506","GHSA-vwp5-f99x-x3rq"],"title":"Backstage is an open framework for building developer portals. 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A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-94071","identifiers":["EUVD-2026-94071","CVE-2026-106506","GHSA-vwp5-f99x-x3rq"]},"retained":false,"historicalAffected":[]},{"revision":"bf8bd2e40f6945ffba1506ff9e435a52","observedAt":"2026-10-25T04:17:41.466+00:00","statement":{"source":"nvd","id":"CVE-2026-106506","aliases":[],"title":"Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by improper input validation in scaffolder task list ordering. An authenticated Backstage user with …","description":"Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by improper input validation in scaffolder task list ordering. An authenticated Backstage user with permission to create and read relevant scaffolder tasks may be able to infer confidential task data under specific conditions. Successful exploitation requires retained task secrets, visibility of a target task, knowledge of the secret structure, and repeated requests. This issue is fixed in version 4.1.0.","state":0,"publishedAt":"2026-10-06T22:17:05.993+00:00","modifiedAt":"2026-10-09T17:50:13.653+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/backstage/backstage/commit/e673a869449874a9169e8f89852e75e862011b93","https://github.com/backstage/backstage/releases/tag/v1.54.6","https://github.com/backstage/backstage/security/advisories/GHSA-vwp5-f99x-x3rq"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-106506","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-202","CWE-203"],"productCriteria":["cpe:2.3:a:linuxfoundation:backstage\\/plugin-scaffolder-backend:*:*:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-10-06T22:17:05.993","lastModified":"2026-10-09T17:50:13.653"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-106506","identifiers":["CVE-2026-106506"]},"retained":false,"historicalAffected":[]},{"revision":"ab4901e491f54671af20c96430b5776d","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-vwp5-f99x-x3rq","aliases":["CVE-2026-106506"],"title":"Backstage has improper input validation in scaffolder task list ordering","description":"### Impact\n\nAn authenticated Backstage user with permission to create and read relevant scaffolder tasks may be able to infer confidential task data under specific conditions. Successful exploitation requires retained task secrets, visibility of a target task, knowledge of the secret structure, and repeated requests.\n\n### Patches\n\nPatched in `@backstage/plugin-scaffolder-backend` version `4.1.0`\n\n### Workarounds\n\n- At the gateway or reverse proxy, reject task-list requests that specify custom ordering, or allow ordering only by `created_at`, `status`, and `created_by`.\n- Restrict scaffolder task creation and task read permissions to trusted users, preferably using owner-based task-read conditions.\n- Disabling task recovery can reduce secret retention after a task is claimed, but it does not protect secrets in queued tasks and should not be treated as complete mitigation.","state":0,"publishedAt":"2026-10-07T16:24:12+00:00","modifiedAt":"2026-10-07T16:30:05.4913004+00:00","affected":[{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"4.1.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/backstage/backstage/security/advisories/GHSA-vwp5-f99x-x3rq","https://nvd.nist.gov/vuln/detail/CVE-2026-106506","https://github.com/backstage/backstage/commit/e673a869449874a9169e8f89852e75e862011b93","https://github.com/backstage/backstage","https://github.com/backstage/backstage/releases/tag/v1.54.6"],"sourceUrl":"https://github.com/advisories/GHSA-vwp5-f99x-x3rq","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-vwp5-f99x-x3rq","identifiers":["GHSA-vwp5-f99x-x3rq","CVE-2026-106506"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-10T14:21:34.5623772+00:00","complete":true,"records":1773,"lastAttemptAt":"2026-11-10T14:21:34.5623772+00:00","lastSuccessAt":"2026-11-10T14:21:34.7231232+00:00","error":null,"lastVerifiedAt":"2026-11-10T14:21:34.7231242+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-8859cf40d4337e24bd2f258cc7778fbad01bb24c79d057aaf34cf1dfc6f8917d-20f5f1620a9c4d3a163610437b9eb63d7be94e16a276e2f8f9cc654892f91ba1","complete":true,"records":421967,"lastAttemptAt":"2026-11-10T14:21:27.5892784+00:00","lastSuccessAt":"2026-11-10T14:21:27.2999239+00:00","error":null,"lastVerifiedAt":"2026-11-10T14:21:27.5892784+00:00","snapshotPublishedAt":"2026-11-10T13:30:59+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. 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