{"answers":{"affected":"12 open source packages ship an affected version, including @backstage/plugin-scaffolder-backend, @backstage/plugin-scaffolder-backend-module-azure and @backstage/plugin-scaffolder-backend-module-bitbucket-cloud. It affects 7 products.","exploited":"There is no known exploitation of CVE-2026-106462 in the wild and no public exploit code.","fix":"Upgrade @backstage/plugin-scaffolder-backend to 4.1.0 or later.","what":"CVE-2026-106462 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-2026-106462 and fix it if it is affected.\n\nWhat it is: CVE-2026-106462 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-2026-106462 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- @backstage/plugin-scaffolder-backend-module-azure (npm): affected all versions; fixed in 0.2.25\n- @backstage/plugin-scaffolder-backend-module-azure (npm): affected all versions; fixed in 0.2.25\n- @backstage/plugin-scaffolder-backend-module-bitbucket-cloud (npm): affected all versions; fixed in 0.3.10\n- @backstage/plugin-scaffolder-backend-module-bitbucket-cloud (npm): affected all versions; fixed in 0.3.10\n- @backstage/plugin-scaffolder-backend-module-bitbucket-server (npm): affected all versions; fixed in 0.2.25\n- @backstage/plugin-scaffolder-backend-module-bitbucket-server (npm): affected all versions; fixed in 0.2.25\n- @backstage/plugin-scaffolder-backend-module-github (npm): affected all versions; fixed in 0.9.13\n- @backstage/plugin-scaffolder-backend-module-github (npm): affected all versions; fixed in 0.9.13\n- @backstage/plugin-scaffolder-backend-module-gitlab (npm): affected all versions; fixed in 0.11.10\n- @backstage/plugin-scaffolder-backend-module-gitlab (npm): affected all versions; fixed in 0.11.10\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-2026-106462/ (Markdown: https://insights.sbomify.com/CVE-2026-106462/index.md)","id":"CVE-2026-106462","markdown":"https://insights.sbomify.com/CVE-2026-106462/index.md","name":"CVE-2026-106462","record":{"aliases":["GHSA-29gx-h2m3-xw44"],"analysis":{"component_type":"web_application","fix_type":"configuration_change","impacts":["privilege_escalation","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Backstage developer portal","requires_auth":"low_privilege","summary":"Authenticated users can bypass credential boundaries to perform GitHub operations with broader access than intended in Backstage scaffolder actions.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"backstage","vendor":"linuxfoundation"},{"product":"backstage\\/plugin-scaffolder-backend","vendor":"linuxfoundation"},{"product":"backstage\\/plugin-scaffolder-backend-module-azure","vendor":"linuxfoundation"},{"product":"backstage\\/plugin-scaffolder-backend-module-bitbucket-cloud","vendor":"linuxfoundation"},{"product":"backstage\\/plugin-scaffolder-backend-module-bitbucket-server","vendor":"linuxfoundation"},{"product":"backstage\\/plugin-scaffolder-backend-module-github","vendor":"linuxfoundation"},{"product":"backstage\\/plugin-scaffolder-backend-module-gitlab","vendor":"linuxfoundation"}],"cvss":{"score":6.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"},{"id":"CWE-441","name":"Unintended Proxy or Intermediary"}],"description":"Backstage is an open framework for building developer portals. Prior to 1.54.6, scaffolder source-control actions may not consistently enforce intended credential boundaries. An authenticated user could cause an affected action to fall back to broader integration credentials and perform operations with more access than intended. This issue is fixed in 1.54.6 when operators also enable scaffolder.requireScmUserCredentials after upgrading.","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: Scaffolder credential handling may allow unintended GitHub authentication fallback","id":"CVE-2026-106462","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"linuxfoundation:backstage","products":["linuxfoundation:backstage"],"type":"privilege_escalation","year":"2026"},"n_packages":12,"n_references":3,"next":{"headline":"Backstage: Improper authorization in GitLab organizational user ingestion","id":"CVE-2026-106463"},"packages":[{"ecosystem":"npm","fixed":["4.1.0"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend","purl":null,"source":"GHSA-29gx-h2m3-xw44"},{"ecosystem":"npm","fixed":["4.1.0"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend","source":"GHSA-29gx-h2m3-xw44"},{"ecosystem":"npm","fixed":["0.2.25"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend-module-azure","purl":null,"source":"GHSA-29gx-h2m3-xw44"},{"ecosystem":"npm","fixed":["0.2.25"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend-module-azure","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend-module-azure","source":"GHSA-29gx-h2m3-xw44"},{"ecosystem":"npm","fixed":["0.3.10"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend-module-bitbucket-cloud","purl":null,"source":"GHSA-29gx-h2m3-xw44"},{"ecosystem":"npm","fixed":["0.3.10"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend-module-bitbucket-cloud","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend-module-bitbucket-cloud","source":"GHSA-29gx-h2m3-xw44"},{"ecosystem":"npm","fixed":["0.2.25"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend-module-bitbucket-server","purl":null,"source":"GHSA-29gx-h2m3-xw44"},{"ecosystem":"npm","fixed":["0.2.25"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend-module-bitbucket-server","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend-module-bitbucket-server","source":"GHSA-29gx-h2m3-xw44"},{"ecosystem":"npm","fixed":["0.9.13"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend-module-github","purl":null,"source":"GHSA-29gx-h2m3-xw44"},{"ecosystem":"npm","fixed":["0.9.13"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend-module-github","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend-module-github","source":"GHSA-29gx-h2m3-xw44"},{"ecosystem":"npm","fixed":["0.11.10"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend-module-gitlab","purl":null,"source":"GHSA-29gx-h2m3-xw44"},{"ecosystem":"npm","fixed":["0.11.10"],"introduced":["0"],"last_affected":[],"package":"@backstage/plugin-scaffolder-backend-module-gitlab","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend-module-gitlab","source":"GHSA-29gx-h2m3-xw44"}],"prev":{"headline":"Backstage: Incorrect authorization in scaffolder task listing","id":"CVE-2026-106461"},"products":["backstage","plugin-scaffolder-backend","plugin-scaffolder-backend-module-azure","plugin-scaffolder-backend-module-bitbucket-cloud","plugin-scaffolder-backend-module-bitbucket-server","plugin-scaffolder-backend-module-github","plugin-scaffolder-backend-module-gitlab"],"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 bypass credential boundaries to perform GitHub operations with broader access than intended in Backstage scaffolder actions.","url":"https://insights.sbomify.com/CVE-2026-106462/"}