{"schema":"threatline.record/2","record":{"id":"CVE-2026-106496","aliases":["GHSA-pcmq-25r3-5w9v"],"summary":"Backstage: Inconsistent enforcement of allowed location types during catalog processing","details":"### Impact\n\nUnder certain configurations, the catalog backend could process location types that were not intended to be allowed, potentially leading to unintended file access on the backend host.\n\n### Patches\n\nPatched in `@backstage/plugin-catalog-backend` version `3.9.1`\n\n### Workarounds\n\nNo practical workarounds are available. Upgrade to the patched version.","categories":["Libraries & packages"],"product":"@backstage/plugin-catalog-backend","vendor":"backstage","ecosystem":"npm","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-pcmq-25r3-5w9v","source_modified_at":"2026-10-07T17:59:34Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"@backstage/plugin-catalog-backend"},"range":"< 3.9.1"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-106496","source_modified_at":"2026-10-07T17:06:48.520Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"backstage","vendor":"backstage","versions":[{"version":"< 1.54.6","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-106496","source_modified_at":"2026-10-07T17:06:48.520Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"plugin-catalog-backend","vendor":"@backstage","versions":[{"version":"< 3.9.1","status":"affected"}],"defaultStatus":null},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-pcmq-25r3-5w9v","source_modified_at":"2026-10-07T18:15:13.120771098Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"@backstage/plugin-catalog-backend","purl":"pkg:npm/%40backstage/plugin-catalog-backend"},"ranges":[{"events":[{"introduced":"0"},{"fixed":"3.9.1"}],"type":"SEMVER"}],"versions":[]}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-pcmq-25r3-5w9v","source_modified_at":"2026-10-07T17:59:34Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"@backstage/plugin-catalog-backend"},"version":"3.9.1"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-pcmq-25r3-5w9v","source_modified_at":"2026-10-07T18:15:13.120771098Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"@backstage/plugin-catalog-backend","purl":"pkg:npm/%40backstage/plugin-catalog-backend"},"version":"3.9.1"}],"cvss":3.1,"severity":"Low","kev":{"listed":false},"epss":{"probability":0.00244,"percentile":0.14688,"score_date":"2026-10-23"},"published_at":"2026-10-06T21:17:11.966Z","modified_at":"2026-10-07T18:15:13.120771098Z","provenance":[{"source":"GitHub Advisory Database","url":"https://github.com/advisories/GHSA-pcmq-25r3-5w9v","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-07T17:59:34Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-106496","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-07T17:06:48.520Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-pcmq-25r3-5w9v","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-07T18:15:13.120771098Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-106496","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["GitHub Advisory Database","CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/backstage/backstage/security/advisories/GHSA-pcmq-25r3-5w9v","tags":["x_refsource_CONFIRM"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106496","source":"GitHub Advisory Database"},{"source":"CVE List","url":"https://github.com/backstage/backstage/commit/23774b61560d851bc69cd6a77d12561b24d11afd","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/backstage/backstage/releases/tag/v1.54.6","tags":["x_refsource_MISC"]},{"url":"https://github.com/advisories/GHSA-pcmq-25r3-5w9v","source":"GitHub Advisory Database"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-07T15:27:09.255888Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-07T18:15:13.120771098Z","content_hash":"4b5e1bfd3050a278495d26e44a878fdc418a1c2b48c44e2e88a3be1b5064bb10"}}