{"schema":"threatline.record/2","record":{"id":"CVE-2026-106559","aliases":["GHSA-75qf-886x-5xf2"],"summary":"Backstage: Improper input validation in Confluence to Markdown scaffolder module","details":"### Impact\n\nInsufficient input validation in the Confluence to Markdown scaffolder module could allow an attacker to influence file write operations during template execution. Exploitation requires a Backstage user to run a template that processes attacker-influenced Confluence content.\n\n### Patches\n\nPatched in `@backstage/plugin-scaffolder-backend-module-confluence-to-markdown` version `0.3.25`\n\n### Workarounds\n\nIf unable to update immediately:\n\n- Restrict Confluence edit access to trusted users.\n- Review Confluence page content before running scaffolder templates against untrusted pages.","categories":["Applications & CMS"],"product":"@backstage/plugin-scaffolder-backend-module-confluence-to-markdown","vendor":"backstage","ecosystem":"npm","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-75qf-886x-5xf2","source_modified_at":"2026-10-07T18:03:10Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend-module-confluence-to-markdown"},"range":"< 0.3.25"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-106559","source_modified_at":"2026-10-07T16:16:19.815Z","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-2026-106559","source_modified_at":"2026-10-07T16:16:19.815Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"plugin-scaffolder-backend-module-confluence-to-markdown","vendor":"@backstage","versions":[{"version":"< 0.3.25","status":"affected"}],"defaultStatus":null},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-75qf-886x-5xf2","source_modified_at":"2026-10-07T18:15:12.760429318Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend-module-confluence-to-markdown","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend-module-confluence-to-markdown"},"ranges":[{"events":[{"introduced":"0"},{"fixed":"0.3.25"}],"type":"SEMVER"}],"versions":[]}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-75qf-886x-5xf2","source_modified_at":"2026-10-07T18:03:10Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend-module-confluence-to-markdown"},"version":"0.3.25"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-75qf-886x-5xf2","source_modified_at":"2026-10-07T18:15:12.760429318Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend-module-confluence-to-markdown","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend-module-confluence-to-markdown"},"version":"0.3.25"}],"cvss":6.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00332,"percentile":0.25169,"score_date":"2026-10-23"},"published_at":"2026-10-07T14:48:03.121Z","modified_at":"2026-10-07T18:15:12.760429318Z","provenance":[{"source":"GitHub Advisory Database","url":"https://github.com/advisories/GHSA-75qf-886x-5xf2","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-07T18:03:10Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-106559","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-07T16:16:19.815Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-75qf-886x-5xf2","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-07T18:15:12.760429318Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-106559","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-75qf-886x-5xf2","tags":["x_refsource_CONFIRM"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106559","source":"GitHub Advisory Database"},{"source":"CVE List","url":"https://github.com/backstage/backstage/commit/506c2c11bce3ed9d1f8f50de5d6474b16e43a65e","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-75qf-886x-5xf2","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":"2026-10-07T16:16:10.333361Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-07T18:15:12.760429318Z","content_hash":"5c9ab26a5425c1fd9848679c8b6854909aeb6e68ba001b200310fa5a151c0637"}}