{"answers":{"affected":"2 open source packages ship an affected version, including @backstage/plugin-scaffolder-backend. It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-106506 in the wild and no public exploit code.","fix":"Upgrade @backstage/plugin-scaffolder-backend to 4.1.0 or later.","what":"CVE-2026-106506 is a medium-severity vulnerability in Linuxfoundation Backstage, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-106506 and fix it if it is affected.\n\nWhat it is: CVE-2026-106506 is a medium-severity vulnerability in Linuxfoundation Backstage, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-106506 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @backstage/plugin-scaffolder-backend (npm): affected all versions; fixed in 4.1.0\n- @backstage/plugin-scaffolder-backend (npm): affected all versions; fixed in 4.1.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-106506/ (Markdown: https://insights.sbomify.com/CVE-2026-106506/index.md)","id":"CVE-2026-106506","markdown":"https://insights.sbomify.com/CVE-2026-106506/index.md","name":"CVE-2026-106506","record":{"aliases":["GHSA-vwp5-f99x-x3rq"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Backstage developer portal","requires_auth":"low_privilege","summary":"Authenticated users can infer confidential task data via improper input validation in scaffolder task list ordering.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"backstage","vendor":"linuxfoundation"},{"product":"backstage\\/plugin-scaffolder-backend","vendor":"linuxfoundation"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-203","name":"Observable Discrepancy"},{"id":"CWE-202","name":"Exposure of Sensitive Information Through Data Queries"}],"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.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Backstage: Improper input validation in scaffolder task list ordering","id":"CVE-2026-106506","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"linuxfoundation:backstage","products":["linuxfoundation:backstage"],"type":"information_disclosure","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Backstage: TechDocs arbitrary file read via mkdocs snippets","id":"CVE-2026-106507"},"packages":[{"ecosystem":"npm","fixed":["4.1.0"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend","purl":null,"source":"GHSA-vwp5-f99x-x3rq"},{"ecosystem":"npm","fixed":["4.1.0"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend","source":"GHSA-vwp5-f99x-x3rq"}],"prev":{"headline":"Backstage: Bypass of MkDocs configuration sanitizer in TechDocs backend","id":"CVE-2026-106505"},"products":["backstage","plugin-scaffolder-backend"],"published":"2026-10-06","related":[{"cvss_score":9.6,"headline":"Backstage: Sensitive information exposure in Scaffolder","id":"CVE-2026-106501","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":8.8,"headline":"Backstage: Improper validation of TechDocs MkDocs configuration","id":"CVE-2026-106558","kev_date_added":null,"published":"2026-10-07"},{"cvss_score":8.8,"headline":"Backstage: Improper input validation in TechDocs MkDocs configuration","id":"CVE-2026-88064","kev_date_added":null,"published":"2026-09-16"},{"cvss_score":8.5,"headline":"Backstage: Improper input validation in Sentry scaffolder actions","id":"CVE-2026-106459","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":8.5,"headline":"Backstage: Improper filesystem validation in Bitbucket pull-request scaffolder actions","id":"CVE-2026-106486","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":8.5,"headline":"Backstage: Improper task state validation in Scaffolder backend","id":"CVE-2026-106500","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":8.5,"headline":"Path Traversal in @backstage/plugin-scaffolder-backend","id":"CVE-2021-43783","kev_date_added":null,"published":"2021-11-29"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-07","vendors":["@backstage","backstage"]},"summary":"Authenticated users can infer confidential task data via improper input validation in scaffolder task list ordering.","url":"https://insights.sbomify.com/CVE-2026-106506/"}